[PATCH] some kmalloc/memset ->kzalloc (tree wide)

[Yoann Padioleau]

Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc).

Here is a short excerpt of the semantic patch performing
this transformation: 

@@
type T2;
expression x;
identifier f,fld;
expression E;
expression E1,E2;
expression e1,e2,e3,y;
statement S;
@@

 x = 
- kmalloc
+ kzalloc
  (E1,E2)
  ...  when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\)
- memset((T2)x,0,E1);


@@
expression E1,E2,E3;
@@

- kzalloc(E1 * E2,E3)
+ kcalloc(E1,E2,E3)





Signed-off-by: Yoann Padioleau <padator@xxxxxxxxxx> 

 Documentation/connector/cn_test.c                     |    3 +--
 Documentation/filesystems/configfs/configfs_example.c |    6 ++----
 arch/alpha/kernel/module.c                            |    3 +--
 arch/arm/mach-iop13xx/pci.c                           |    3 +--
 arch/blackfin/mm/blackfin_sram.c                      |    3 +--
 arch/cris/arch-v32/drivers/pci/dma.c                  |    6 ++----
 arch/powerpc/kernel/lparcfg.c                         |    3 +--
 arch/powerpc/kernel/of_platform.c                     |    3 +--
 block/scsi_ioctl.c                                    |    3 +--
 drivers/block/sx8.c                                   |    3 +--
 drivers/char/amiserial.c                              |    3 +--
 drivers/char/drm/via_dmablit.c                        |    3 +--
 drivers/char/esp.c                                    |    6 ++----
 drivers/char/hvcs.c                                   |    4 +---
 drivers/char/ipmi/ipmi_msghandler.c                   |    3 +--
 drivers/char/pcmcia/synclink_cs.c                     |    3 +--
 drivers/char/rio/rio_linux.c                          |    4 +---
 drivers/char/rio/riocmd.c                             |    4 +---
 drivers/char/rio/riotable.c                           |    3 +--
 drivers/char/rocket.c                                 |    3 +--
 drivers/char/synclink.c                               |    3 +--
 drivers/char/synclink_gt.c                            |    3 +--
 drivers/char/synclinkmp.c                             |    3 +--
 drivers/char/vt.c                                     |    3 +--
 drivers/char/watchdog/mpcore_wdt.c                    |    3 +--
 drivers/char/watchdog/pcwd_usb.c                      |    3 +--
 drivers/edac/edac_mc.c                                |    3 +--
 drivers/ide/mips/swarm.c                              |    3 +--
 drivers/infiniband/core/addr.c                        |    3 +--
 drivers/infiniband/hw/cxgb3/iwch_cm.c                 |    3 +--
 drivers/input/serio/ambakmi.c                         |    6 ++----
 drivers/input/serio/pcips2.c                          |    6 ++----
 drivers/input/serio/sa1111ps2.c                       |    6 ++----
 drivers/macintosh/macio_asic.c                        |    3 +--
 drivers/macintosh/smu.c                               |    3 +--
 drivers/macintosh/therm_pm72.c                        |    3 +--
 drivers/macintosh/therm_windtunnel.c                  |    3 +--
 drivers/macintosh/windfarm_lm75_sensor.c              |    3 +--
 drivers/md/dm-raid1.c                                 |    3 +--
 drivers/media/dvb/cinergyT2/cinergyT2.c               |    3 +--
 drivers/media/video/cpia2/cpia2_core.c                |    4 +---
 drivers/media/video/msp3400-driver.c                  |    3 +--
 drivers/media/video/planb.c                           |    3 +--
 drivers/media/video/usbvideo/vicam.c                  |    3 +--
 drivers/media/video/zr364xx.c                         |    3 +--
 drivers/mfd/mcp-core.c                                |    3 +--
 drivers/mfd/ucb1x00-core.c                            |    3 +--
 drivers/misc/asus-laptop.c                            |    3 +--
 drivers/misc/ibmasm/command.c                         |    6 ++----
 drivers/misc/ibmasm/ibmasmfs.c                        |    3 +--
 drivers/misc/ibmasm/module.c                          |    3 +--
 drivers/mmc/card/block.c                              |    3 +--
 drivers/mmc/core/sysfs.c                              |    3 +--
 drivers/net/b44.c                                     |    3 +--
 drivers/net/bsd_comp.c                                |    3 +--
 drivers/net/forcedeth.c                               |    6 ++----
 drivers/net/hamradio/dmascc.c                         |    4 +---
 drivers/net/irda/irport.c                             |    3 +--
 drivers/net/irda/irtty-sir.c                          |    3 +--
 drivers/net/iseries_veth.c                            |    6 ++----
 drivers/net/lance.c                                   |    3 +--
 drivers/net/pcmcia/com20020_cs.c                      |    3 +--
 drivers/net/pcmcia/ibmtr_cs.c                         |    3 +--
 drivers/net/ppp_async.c                               |    3 +--
 drivers/net/ppp_deflate.c                             |    6 ++----
 drivers/net/ppp_mppe.c                                |    3 +--
 drivers/net/ppp_synctty.c                             |    3 +--
 drivers/net/shaper.c                                  |    3 +--
 drivers/net/wan/c101.c                                |    3 +--
 drivers/net/wan/cosa.c                                |    4 +---
 drivers/net/wan/cycx_main.c                           |    4 +---
 drivers/net/wan/cycx_x25.c                            |    3 +--
 drivers/net/wan/dscc4.c                               |    6 ++----
 drivers/net/wan/farsync.c                             |    3 +--
 drivers/net/wan/hostess_sv11.c                        |    3 +--
 drivers/net/wan/n2.c                                  |    3 +--
 drivers/net/wan/pc300_drv.c                           |    3 +--
 drivers/net/wan/pc300too.c                            |    3 +--
 drivers/net/wan/pci200syn.c                           |    3 +--
 drivers/net/wan/sdla.c                                |    3 +--
 drivers/net/wan/sealevel.c                            |    3 +--
 drivers/net/wan/wanxl.c                               |    3 +--
 drivers/net/wan/x25_asy.c                             |    4 +---
 drivers/nubus/nubus.c                                 |    6 ++----
 drivers/parport/parport_cs.c                          |    3 +--
 drivers/parport/parport_serial.c                      |    3 +--
 drivers/pci/pcie/aer/aerdrv.c                         |    3 +--
 drivers/pnp/core.c                                    |    3 +--
 drivers/rapidio/rio-scan.c                            |    6 ++----
 drivers/s390/char/tape_34xx.c                         |    3 +--
 drivers/s390/net/claw.c                               |    9 +++------
 drivers/s390/scsi/zfcp_erp.c                          |    3 +--
 drivers/sbus/char/bbc_i2c.c                           |    3 +--
 drivers/sbus/char/vfc_dev.c                           |    5 +----
 drivers/scsi/3w-9xxx.c                                |    3 +--
 drivers/scsi/NCR53C9x.c                               |    3 +--
 drivers/scsi/NCR_D700.c                               |    3 +--
 drivers/scsi/NCR_Q720.c                               |    3 +--
 drivers/scsi/aacraid/aachba.c                         |    4 +---
 drivers/scsi/imm.c                                    |    3 +--
 drivers/scsi/ips.c                                    |    3 +--
 drivers/scsi/lasi700.c                                |    3 +--
 drivers/scsi/lpfc/lpfc_init.c                         |    3 +--
 drivers/scsi/lpfc/lpfc_scsi.c                         |    3 +--
 drivers/scsi/lpfc/lpfc_sli.c                          |    5 +----
 drivers/scsi/megaraid/megaraid_mbox.c                 |   14 ++++----------
 drivers/scsi/megaraid/megaraid_mm.c                   |    3 +--
 drivers/scsi/megaraid/megaraid_sas.c                  |    4 +---
 drivers/scsi/pcmcia/aha152x_stub.c                    |    3 +--
 drivers/scsi/pcmcia/nsp_cs.c                          |    3 +--
 drivers/scsi/pcmcia/qlogic_stub.c                     |    3 +--
 drivers/scsi/pcmcia/sym53c500_cs.c                    |    3 +--
 drivers/scsi/ppa.c                                    |    3 +--
 drivers/scsi/sim710.c                                 |    3 +--
 drivers/scsi/tmscsim.c                                |    3 +--
 drivers/serial/amba-pl011.c                           |    3 +--
 drivers/sh/superhyway/superhyway.c                    |    3 +--
 drivers/sn/ioc3.c                                     |    3 +--
 drivers/telephony/ixj_pcmcia.c                        |    3 +--
 drivers/usb/gadget/goku_udc.c                         |    3 +--
 drivers/usb/gadget/serial.c                           |    3 +--
 drivers/usb/host/ohci-hcd.c                           |    3 +--
 drivers/usb/host/sl811_cs.c                           |    3 +--
 drivers/usb/misc/ftdi-elan.c                          |    3 +--
 drivers/video/amba-clcd.c                             |    3 +--
 drivers/video/aty/atyfb_base.c                        |    3 +--
 drivers/video/au1200fb.c                              |    3 +--
 drivers/video/clps711xfb.c                            |    3 +--
 drivers/video/cyber2000fb.c                           |    3 +--
 drivers/video/offb.c                                  |    3 +--
 drivers/video/pvr2fb.c                                |    3 +--
 drivers/video/savage/savagefb_driver.c                |    3 +--
 drivers/video/valkyriefb.c                            |    3 +--
 drivers/w1/masters/matrox_w1.c                        |    3 +--
 drivers/w1/slaves/w1_ds2433.c                         |    3 +--
 drivers/w1/w1.c                                       |    3 +--
 drivers/w1/w1_int.c                                   |    3 +--
 fs/dlm/memory.c                                       |   12 +++---------
 fs/ext2/super.c                                       |    4 +---
 fs/partitions/check.c                                 |    3 +--
 net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c |    3 +--
 net/mac80211/ieee80211_rate.c                         |    3 +--
 net/mac80211/ieee80211_sta.c                          |    3 +--
 net/netfilter/nf_conntrack_standalone.c               |    3 +--
 net/tipc/name_table.c                                 |    3 +--
 sound/core/seq/seq_virmidi.c                          |    3 +--
 146 files changed, 166 insertions(+), 352 deletions(-)


diff --git a/Documentation/connector/cn_test.c b/Documentation/connector/cn_test.c
index 3e73231..be7af14 100644
--- a/Documentation/connector/cn_test.c
+++ b/Documentation/connector/cn_test.c
@@ -124,9 +124,8 @@ static void cn_test_timer_func(unsigned 
 	struct cn_msg *m;
 	char data[32];
 
-	m = kmalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
+	m = kzalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
 	if (m) {
-		memset(m, 0, sizeof(*m) + sizeof(data));
 
 		memcpy(&m->id, &cn_test_id, sizeof(m->id));
 		m->seq = cn_test_timer_counter;
diff --git a/Documentation/filesystems/configfs/configfs_example.c b/Documentation/filesystems/configfs/configfs_example.c
index 2d6a14a..004f3c5 100644
--- a/Documentation/filesystems/configfs/configfs_example.c
+++ b/Documentation/filesystems/configfs/configfs_example.c
@@ -277,11 +277,10 @@ static struct config_item *simple_childr
 {
 	struct simple_child *simple_child;
 
-	simple_child = kmalloc(sizeof(struct simple_child), GFP_KERNEL);
+	simple_child = kzalloc(sizeof(struct simple_child), GFP_KERNEL);
 	if (!simple_child)
 		return NULL;
 
-	memset(simple_child, 0, sizeof(struct simple_child));
 
 	config_item_init_type_name(&simple_child->item, name,
 				   &simple_child_type);
@@ -364,12 +363,11 @@ static struct config_group *group_childr
 {
 	struct simple_children *simple_children;
 
-	simple_children = kmalloc(sizeof(struct simple_children),
+	simple_children = kzalloc(sizeof(struct simple_children),
 				  GFP_KERNEL);
 	if (!simple_children)
 		return NULL;
 
-	memset(simple_children, 0, sizeof(struct simple_children));
 
 	config_group_init_type_name(&simple_children->group, name,
 				    &simple_children_type);
diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
index bd03dc9..026ba9a 100644
--- a/arch/alpha/kernel/module.c
+++ b/arch/alpha/kernel/module.c
@@ -119,8 +119,7 @@ module_frob_arch_sections(Elf64_Ehdr *hd
 	}
 
 	nsyms = symtab->sh_size / sizeof(Elf64_Sym);
-	chains = kmalloc(nsyms * sizeof(struct got_entry), GFP_KERNEL);
-	memset(chains, 0, nsyms * sizeof(struct got_entry));
+	chains = kcalloc(nsyms, sizeof(struct got_entry), GFP_KERNEL);
 
 	got->sh_size = 0;
 	got->sh_addralign = 8;
diff --git a/arch/arm/mach-iop13xx/pci.c b/arch/arm/mach-iop13xx/pci.c
index 9d63d7f..b84955f 100644
--- a/arch/arm/mach-iop13xx/pci.c
+++ b/arch/arm/mach-iop13xx/pci.c
@@ -1002,11 +1002,10 @@ int iop13xx_pci_setup(int nr, struct pci
 	if (nr > 1)
 		return 0;
 
-	res = kmalloc(sizeof(struct resource) * 2, GFP_KERNEL);
+	res = kcalloc(sizeof(struct resource), 2, GFP_KERNEL);
 	if (!res)
 		panic("PCI: unable to alloc resources");
 
-	memset(res, 0, sizeof(struct resource) * 2);
 
 	/* 'nr' assumptions:
 	 * ATUX is always 0
diff --git a/arch/blackfin/mm/blackfin_sram.c b/arch/blackfin/mm/blackfin_sram.c
index 6810792..a63bcda 100644
--- a/arch/blackfin/mm/blackfin_sram.c
+++ b/arch/blackfin/mm/blackfin_sram.c
@@ -521,10 +521,9 @@ void *sram_alloc_with_lsl(size_t size, u
 	struct sram_list_struct *lsl = NULL;
 	struct mm_struct *mm = current->mm;
 
-	lsl = kmalloc(sizeof(struct sram_list_struct), GFP_KERNEL);
+	lsl = kzalloc(sizeof(struct sram_list_struct), GFP_KERNEL);
 	if (!lsl)
 		return NULL;
-	memset(lsl, 0, sizeof(*lsl));
 
 	if (flags & L1_INST_SRAM)
 		addr = l1_inst_sram_alloc(size);
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c
index 832fc63..66f9500 100644
--- a/arch/cris/arch-v32/drivers/pci/dma.c
+++ b/arch/cris/arch-v32/drivers/pci/dma.c
@@ -91,14 +91,12 @@ int dma_declare_coherent_memory(struct d
 	if (!mem_base)
 		goto out;
 
-	dev->dma_mem = kmalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
+	dev->dma_mem = kzalloc(sizeof(struct dma_coherent_mem), GFP_KERNEL);
 	if (!dev->dma_mem)
 		goto out;
-	memset(dev->dma_mem, 0, sizeof(struct dma_coherent_mem));
-	dev->dma_mem->bitmap = kmalloc(bitmap_size, GFP_KERNEL);
+	dev->dma_mem->bitmap = kzalloc(bitmap_size, GFP_KERNEL);
 	if (!dev->dma_mem->bitmap)
 		goto free1_out;
-	memset(dev->dma_mem->bitmap, 0, bitmap_size);
 
 	dev->dma_mem->virt_base = mem_base;
 	dev->dma_mem->device_base = device_addr;
diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index c492cee..6444eaa 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -248,7 +248,7 @@ static void parse_system_parameter_strin
 	} else {
 		int splpar_strlen;
 		int idx, w_idx;
-		char *workbuffer = kmalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
+		char *workbuffer = kzalloc(SPLPAR_MAXLENGTH, GFP_KERNEL);
 		if (!workbuffer) {
 			printk(KERN_ERR "%s %s kmalloc failure at line %d \n",
 			       __FILE__, __FUNCTION__, __LINE__);
@@ -261,7 +261,6 @@ #endif
 		splpar_strlen = local_buffer[0] * 256 + local_buffer[1];
 		local_buffer += 2;	/* step over strlen value */
 
-		memset(workbuffer, 0, SPLPAR_MAXLENGTH);
 		w_idx = 0;
 		idx = 0;
 		while ((*local_buffer) && (idx < splpar_strlen)) {
diff --git a/arch/powerpc/kernel/of_platform.c b/arch/powerpc/kernel/of_platform.c
index d454f61..b6e1a85 100644
--- a/arch/powerpc/kernel/of_platform.c
+++ b/arch/powerpc/kernel/of_platform.c
@@ -222,10 +222,9 @@ struct of_device* of_platform_device_cre
 {
 	struct of_device *dev;
 
-	dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev)
 		return NULL;
-	memset(dev, 0, sizeof(*dev));
 
 	dev->node = of_node_get(np);
 	dev->dma_mask = 0xffffffffUL;
diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
index e83f1db..deb7b6a 100644
--- a/block/scsi_ioctl.c
+++ b/block/scsi_ioctl.c
@@ -405,11 +405,10 @@ int sg_scsi_ioctl(struct file *file, str
 
 	bytes = max(in_len, out_len);
 	if (bytes) {
-		buffer = kmalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
+		buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
 		if (!buffer)
 			return -ENOMEM;
 
-		memset(buffer, 0, bytes);
 	}
 
 	rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT);
diff --git a/drivers/block/sx8.c b/drivers/block/sx8.c
index 54509eb..949ae93 100644
--- a/drivers/block/sx8.c
+++ b/drivers/block/sx8.c
@@ -1608,7 +1608,7 @@ #ifdef IF_64BIT_DMA_IS_POSSIBLE /* grrrr
 	}
 #endif
 
-	host = kmalloc(sizeof(*host), GFP_KERNEL);
+	host = kzalloc(sizeof(*host), GFP_KERNEL);
 	if (!host) {
 		printk(KERN_ERR DRV_NAME "(%s): memory alloc failure\n",
 		       pci_name(pdev));
@@ -1616,7 +1616,6 @@ #endif
 		goto err_out_regions;
 	}
 
-	memset(host, 0, sizeof(*host));
 	host->pdev = pdev;
 	host->flags = pci_dac ? FL_DAC : 0;
 	spin_lock_init(&host->lock);
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 4eaceab..7be9f06 100644
--- a/drivers/char/amiserial.c
+++ b/drivers/char/amiserial.c
@@ -1726,12 +1726,11 @@ static int get_async_struct(int line, st
 		*ret_info = sstate->info;
 		return 0;
 	}
-	info = kmalloc(sizeof(struct async_struct), GFP_KERNEL);
+	info = kzalloc(sizeof(struct async_struct), GFP_KERNEL);
 	if (!info) {
 		sstate->count--;
 		return -ENOMEM;
 	}
-	memset(info, 0, sizeof(struct async_struct));
 #ifdef DECLARE_WAITQUEUE
 	init_waitqueue_head(&info->open_wait);
 	init_waitqueue_head(&info->close_wait);
diff --git a/drivers/char/drm/via_dmablit.c b/drivers/char/drm/via_dmablit.c
index 2881a06..f246109 100644
--- a/drivers/char/drm/via_dmablit.c
+++ b/drivers/char/drm/via_dmablit.c
@@ -273,10 +273,9 @@ via_alloc_desc_pages(drm_via_sg_info_t *
 	vsg->num_desc_pages = (vsg->num_desc + vsg->descriptors_per_page - 1) / 
 		vsg->descriptors_per_page;
 
-	if (NULL ==  (vsg->desc_pages = kmalloc(sizeof(void *) * vsg->num_desc_pages, GFP_KERNEL))) 
+	if (NULL ==  (vsg->desc_pages = kcalloc(sizeof(void *), vsg->num_desc_pages, GFP_KERNEL))) 
 		return DRM_ERR(ENOMEM);
 	
-	memset(vsg->desc_pages, 0, sizeof(void *) * vsg->num_desc_pages);
 	vsg->state = dr_via_desc_pages_alloc;
 	for (i=0; i<vsg->num_desc_pages; ++i) {
 		if (NULL == (vsg->desc_pages[i] = 
diff --git a/drivers/char/esp.c b/drivers/char/esp.c
index d1bfbaa..0cb7507 100644
--- a/drivers/char/esp.c
+++ b/drivers/char/esp.c
@@ -2466,7 +2466,7 @@ static int __init espserial_init(void)
 		return 1;
 	}
 
-	info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+	info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
 
 	if (!info)
 	{
@@ -2476,7 +2476,6 @@ static int __init espserial_init(void)
 		return 1;
 	}
 
-	memset((void *)info, 0, sizeof(struct esp_struct));
 	spin_lock_init(&info->lock);
 	/* rx_trigger, tx_trigger are needed by autoconfig */
 	info->config.rx_trigger = rx_trigger;
@@ -2534,7 +2533,7 @@ static int __init espserial_init(void)
 		if (!dma)
 			info->stat_flags |= ESP_STAT_NEVER_DMA;
 
-		info = kmalloc(sizeof(struct esp_struct), GFP_KERNEL);
+		info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
 		if (!info)
 		{
 			printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n"); 
@@ -2543,7 +2542,6 @@ static int __init espserial_init(void)
 			return 0;
 		}
 
-		memset((void *)info, 0, sizeof(struct esp_struct));
 		/* rx_trigger, tx_trigger are needed by autoconfig */
 		info->config.rx_trigger = rx_trigger;
 		info->config.tx_trigger = tx_trigger;
diff --git a/drivers/char/hvcs.c b/drivers/char/hvcs.c
index 207f734..17f96e0 100644
--- a/drivers/char/hvcs.c
+++ b/drivers/char/hvcs.c
@@ -784,12 +784,10 @@ static int __devinit hvcs_probe(
 		return -EFAULT;
 	}
 
-	hvcsd = kmalloc(sizeof(*hvcsd), GFP_KERNEL);
+	hvcsd = kzalloc(sizeof(*hvcsd), GFP_KERNEL);
 	if (!hvcsd)
 		return -ENODEV;
 
-	/* hvcsd->tty is zeroed out with the memset */
-	memset(hvcsd, 0x00, sizeof(*hvcsd));
 
 	spin_lock_init(&hvcsd->lock);
 	/* Automatically incs the refcount the first time */
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 8e222f2..f7ae86d 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -2649,10 +2649,9 @@ int ipmi_register_smi(struct ipmi_smi_ha
 			return -ENODEV;
 	}
 
-	intf = kmalloc(sizeof(*intf), GFP_KERNEL);
+	intf = kzalloc(sizeof(*intf), GFP_KERNEL);
 	if (!intf)
 		return -ENOMEM;
-	memset(intf, 0, sizeof(*intf));
 
 	intf->ipmi_version_major = ipmi_version_major(device_id);
 	intf->ipmi_version_minor = ipmi_version_minor(device_id);
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index 13808f6..2b88931 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -540,13 +540,12 @@ static int mgslpc_probe(struct pcmcia_de
     if (debug_level >= DEBUG_LEVEL_INFO)
 	    printk("mgslpc_attach\n");
 
-    info = kmalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
+    info = kzalloc(sizeof(MGSLPC_INFO), GFP_KERNEL);
     if (!info) {
 	    printk("Error can't allocate device instance data\n");
 	    return -ENOMEM;
     }
 
-    memset(info, 0, sizeof(MGSLPC_INFO));
     info->magic = MGSLPC_MAGIC;
     INIT_WORK(&info->task, bh_handler);
     info->max_frame_size = 4096;
diff --git a/drivers/char/rio/rio_linux.c b/drivers/char/rio/rio_linux.c
index 294e9cb..0ce9667 100644
--- a/drivers/char/rio/rio_linux.c
+++ b/drivers/char/rio/rio_linux.c
@@ -803,9 +803,7 @@ static void *ckmalloc(int size)
 {
 	void *p;
 
-	p = kmalloc(size, GFP_KERNEL);
-	if (p)
-		memset(p, 0, size);
+	p = kzalloc(size, GFP_KERNEL);
 	return p;
 }
 
diff --git a/drivers/char/rio/riocmd.c b/drivers/char/rio/riocmd.c
index 8cc60b6..7321d00 100644
--- a/drivers/char/rio/riocmd.c
+++ b/drivers/char/rio/riocmd.c
@@ -556,9 +556,7 @@ struct CmdBlk *RIOGetCmdBlk(void)
 {
 	struct CmdBlk *CmdBlkP;
 
-	CmdBlkP = kmalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
-	if (CmdBlkP)
-		memset(CmdBlkP, 0, sizeof(struct CmdBlk));
+	CmdBlkP = kzalloc(sizeof(struct CmdBlk), GFP_ATOMIC);
 	return CmdBlkP;
 }
 
diff --git a/drivers/char/rio/riotable.c b/drivers/char/rio/riotable.c
index 7e98835..991119c 100644
--- a/drivers/char/rio/riotable.c
+++ b/drivers/char/rio/riotable.c
@@ -863,8 +863,7 @@ int RIOReMapPorts(struct rio_info *p, st
 		if (PortP->TxRingBuffer)
 			memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
 		else if (p->RIOBufferSize) {
-			PortP->TxRingBuffer = kmalloc(p->RIOBufferSize, GFP_KERNEL);
-			memset(PortP->TxRingBuffer, 0, p->RIOBufferSize);
+			PortP->TxRingBuffer = kzalloc(p->RIOBufferSize, GFP_KERNEL);
 		}
 		PortP->TxBufferOut = 0;
 		PortP->TxBufferIn = 0;
diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index a3fd7e7..14fe1f9 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -635,12 +635,11 @@ static void init_r_port(int board, int a
 	ctlp = sCtlNumToCtlPtr(board);
 
 	/*  Get a r_port struct for the port, fill it in and save it globally, indexed by line number */
-	info = kmalloc(sizeof (struct r_port), GFP_KERNEL);
+	info = kzalloc(sizeof (struct r_port), GFP_KERNEL);
 	if (!info) {
 		printk(KERN_INFO "Couldn't allocate info struct for line #%d\n", line);
 		return;
 	}
-	memset(info, 0, sizeof (struct r_port));
 
 	info->magic = RPORT_MAGIC;
 	info->line = line;
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c
index f02a079..9711589 100644
--- a/drivers/char/synclink.c
+++ b/drivers/char/synclink.c
@@ -4332,13 +4332,12 @@ static struct mgsl_struct* mgsl_allocate
 {
 	struct mgsl_struct *info;
 	
-	info = kmalloc(sizeof(struct mgsl_struct),
+	info = kzalloc(sizeof(struct mgsl_struct),
 		 GFP_KERNEL);
 		 
 	if (!info) {
 		printk("Error can't allocate device instance data\n");
 	} else {
-		memset(info, 0, sizeof(struct mgsl_struct));
 		info->magic = MGSL_MAGIC;
 		INIT_WORK(&info->task, mgsl_bh_handler);
 		info->max_frame_size = 4096;
diff --git a/drivers/char/synclink_gt.c b/drivers/char/synclink_gt.c
index 02b49bc..443d30b 100644
--- a/drivers/char/synclink_gt.c
+++ b/drivers/char/synclink_gt.c
@@ -3422,13 +3422,12 @@ static struct slgt_info *alloc_dev(int a
 {
 	struct slgt_info *info;
 
-	info = kmalloc(sizeof(struct slgt_info), GFP_KERNEL);
+	info = kzalloc(sizeof(struct slgt_info), GFP_KERNEL);
 
 	if (!info) {
 		DBGERR(("%s device alloc failed adapter=%d port=%d\n",
 			driver_name, adapter_num, port_num));
 	} else {
-		memset(info, 0, sizeof(struct slgt_info));
 		info->magic = MGSL_MAGIC;
 		INIT_WORK(&info->task, bh_handler);
 		info->max_frame_size = 4096;
diff --git a/drivers/char/synclinkmp.c b/drivers/char/synclinkmp.c
index ef93d05..e2847bd 100644
--- a/drivers/char/synclinkmp.c
+++ b/drivers/char/synclinkmp.c
@@ -3794,14 +3794,13 @@ static SLMP_INFO *alloc_dev(int adapter_
 {
 	SLMP_INFO *info;
 
-	info = kmalloc(sizeof(SLMP_INFO),
+	info = kzalloc(sizeof(SLMP_INFO),
 		 GFP_KERNEL);
 
 	if (!info) {
 		printk("%s(%d) Error can't allocate device instance data for adapter %d, port %d\n",
 			__FILE__,__LINE__, adapter_num, port_num);
 	} else {
-		memset(info, 0, sizeof(SLMP_INFO));
 		info->magic = MGSL_MAGIC;
 		INIT_WORK(&info->task, bh_handler);
 		info->max_frame_size = 4096;
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index 6650ae1..5db295d 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -729,10 +729,9 @@ int vc_allocate(unsigned int currcons)	/
 	    /* although the numbers above are not valid since long ago, the
 	       point is still up-to-date and the comment still has its value
 	       even if only as a historical artifact.  --mj, July 1998 */
-	    vc = kmalloc(sizeof(struct vc_data), GFP_KERNEL);
+	    vc = kzalloc(sizeof(struct vc_data), GFP_KERNEL);
 	    if (!vc)
 		return -ENOMEM;
-	    memset(vc, 0, sizeof(*vc));
 	    vc_cons[currcons].d = vc;
 	    INIT_WORK(&vc_cons[currcons].SAK_work, vc_SAK);
 	    visual_init(vc, currcons, 1);
diff --git a/drivers/char/watchdog/mpcore_wdt.c b/drivers/char/watchdog/mpcore_wdt.c
index e88947f..0d2b277 100644
--- a/drivers/char/watchdog/mpcore_wdt.c
+++ b/drivers/char/watchdog/mpcore_wdt.c
@@ -328,12 +328,11 @@ static int __devinit mpcore_wdt_probe(st
 		goto err_out;
 	}
 
-	wdt = kmalloc(sizeof(struct mpcore_wdt), GFP_KERNEL);
+	wdt = kzalloc(sizeof(struct mpcore_wdt), GFP_KERNEL);
 	if (!wdt) {
 		ret = -ENOMEM;
 		goto err_out;
 	}
-	memset(wdt, 0, sizeof(struct mpcore_wdt));
 
 	wdt->dev = &dev->dev;
 	wdt->irq = platform_get_irq(dev, 0);
diff --git a/drivers/char/watchdog/pcwd_usb.c b/drivers/char/watchdog/pcwd_usb.c
index 1e7a671..0f3fd6c 100644
--- a/drivers/char/watchdog/pcwd_usb.c
+++ b/drivers/char/watchdog/pcwd_usb.c
@@ -626,12 +626,11 @@ static int usb_pcwd_probe(struct usb_int
 	maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
 
 	/* allocate memory for our device and initialize it */
-	usb_pcwd = kmalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
+	usb_pcwd = kzalloc (sizeof(struct usb_pcwd_private), GFP_KERNEL);
 	if (usb_pcwd == NULL) {
 		printk(KERN_ERR PFX "Out of memory\n");
 		goto error;
 	}
-	memset (usb_pcwd, 0x00, sizeof (*usb_pcwd));
 
 	usb_pcwd_device = usb_pcwd;
 
diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
index 7b62230..97c3bf3 100644
--- a/drivers/edac/edac_mc.c
+++ b/drivers/edac/edac_mc.c
@@ -1336,7 +1336,7 @@ struct mem_ctl_info *edac_mc_alloc(unsig
 	pvt = align_ptr(&chi[nr_chans * nr_csrows], sz_pvt);
 	size = ((unsigned long) pvt) + sz_pvt;
 
-	if ((mci = kmalloc(size, GFP_KERNEL)) == NULL)
+	if ((mci = kzalloc(size, GFP_KERNEL)) == NULL)
 		return NULL;
 
 	/* Adjust pointers so they point within the memory we just allocated
@@ -1346,7 +1346,6 @@ struct mem_ctl_info *edac_mc_alloc(unsig
 	chi = (struct channel_info *) (((char *) mci) + ((unsigned long) chi));
 	pvt = sz_pvt ? (((char *) mci) + ((unsigned long) pvt)) : NULL;
 
-	memset(mci, 0, size);  /* clear all fields */
 	mci->csrows = csi;
 	mci->pvt_info = pvt;
 	mci->nr_csrows = nr_csrows;
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 6e935d7..c2e2957 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -165,12 +165,11 @@ static int __devinit swarm_ide_init_modu
 		goto out;
 	}
 
-        if (!(pldev = kmalloc(sizeof (*pldev), GFP_KERNEL))) {
+        if (!(pldev = kzalloc(sizeof (*pldev), GFP_KERNEL))) {
 		err = -ENOMEM;
 		goto out_unregister_driver;
 	}
 
-	memset (pldev, 0, sizeof (*pldev));
 	pldev->name		= swarm_ide_string;
 	pldev->id		= 0;
 	pldev->dev.release	= swarm_ide_platform_release;
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index a91001c..c5c33d3 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -295,10 +295,9 @@ int rdma_resolve_ip(struct rdma_addr_cli
 	struct addr_req *req;
 	int ret = 0;
 
-	req = kmalloc(sizeof *req, GFP_KERNEL);
+	req = kzalloc(sizeof *req, GFP_KERNEL);
 	if (!req)
 		return -ENOMEM;
-	memset(req, 0, sizeof *req);
 
 	if (src_addr)
 		memcpy(&req->src_addr, src_addr, ip_addr_size(src_addr));
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index b2faff5..b58ca06 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -229,9 +229,8 @@ static void *alloc_ep(int size, gfp_t gf
 {
 	struct iwch_ep_common *epc;
 
-	epc = kmalloc(size, gfp);
+	epc = kzalloc(size, gfp);
 	if (epc) {
-		memset(epc, 0, size);
 		kref_init(&epc->kref);
 		spin_lock_init(&epc->lock);
 		init_waitqueue_head(&epc->waitq);
diff --git a/drivers/input/serio/ambakmi.c b/drivers/input/serio/ambakmi.c
index 5a7b49c..b10ffae 100644
--- a/drivers/input/serio/ambakmi.c
+++ b/drivers/input/serio/ambakmi.c
@@ -117,15 +117,13 @@ static int amba_kmi_probe(struct amba_de
 	if (ret)
 		return ret;
 
-	kmi = kmalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
-	io = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	kmi = kzalloc(sizeof(struct amba_kmi_port), GFP_KERNEL);
+	io = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!kmi || !io) {
 		ret = -ENOMEM;
 		goto out;
 	}
 
-	memset(kmi, 0, sizeof(struct amba_kmi_port));
-	memset(io, 0, sizeof(struct serio));
 
 	io->id.type	= SERIO_8042;
 	io->write	= amba_kmi_write;
diff --git a/drivers/input/serio/pcips2.c b/drivers/input/serio/pcips2.c
index ea5e3c6..1b404f9 100644
--- a/drivers/input/serio/pcips2.c
+++ b/drivers/input/serio/pcips2.c
@@ -140,15 +140,13 @@ static int __devinit pcips2_probe(struct
 	if (ret)
 		goto disable;
 
-	ps2if = kmalloc(sizeof(struct pcips2_data), GFP_KERNEL);
-	serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	ps2if = kzalloc(sizeof(struct pcips2_data), GFP_KERNEL);
+	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!ps2if || !serio) {
 		ret = -ENOMEM;
 		goto release;
 	}
 
-	memset(ps2if, 0, sizeof(struct pcips2_data));
-	memset(serio, 0, sizeof(struct serio));
 
 	serio->id.type		= SERIO_8042;
 	serio->write		= pcips2_write;
diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c
index d31ece8..2ad8878 100644
--- a/drivers/input/serio/sa1111ps2.c
+++ b/drivers/input/serio/sa1111ps2.c
@@ -234,15 +234,13 @@ static int __devinit ps2_probe(struct sa
 	struct serio *serio;
 	int ret;
 
-	ps2if = kmalloc(sizeof(struct ps2if), GFP_KERNEL);
-	serio = kmalloc(sizeof(struct serio), GFP_KERNEL);
+	ps2if = kzalloc(sizeof(struct ps2if), GFP_KERNEL);
+	serio = kzalloc(sizeof(struct serio), GFP_KERNEL);
 	if (!ps2if || !serio) {
 		ret = -ENOMEM;
 		goto free;
 	}
 
-	memset(ps2if, 0, sizeof(struct ps2if));
-	memset(serio, 0, sizeof(struct serio));
 
 	serio->id.type		= SERIO_8042;
 	serio->write		= ps2_write;
diff --git a/drivers/macintosh/macio_asic.c b/drivers/macintosh/macio_asic.c
index c96b7fe..ec9e5f3 100644
--- a/drivers/macintosh/macio_asic.c
+++ b/drivers/macintosh/macio_asic.c
@@ -365,10 +365,9 @@ static struct macio_dev * macio_add_one_
 	if (np == NULL)
 		return NULL;
 
-	dev = kmalloc(sizeof(*dev), GFP_KERNEL);
+	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 	if (!dev)
 		return NULL;
-	memset(dev, 0, sizeof(*dev));
 
 	dev->bus = &chip->lbus;
 	dev->media_bay = in_bay;
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index f8e1a13..d409f67 100644
--- a/drivers/macintosh/smu.c
+++ b/drivers/macintosh/smu.c
@@ -1053,10 +1053,9 @@ static int smu_open(struct inode *inode,
 	struct smu_private *pp;
 	unsigned long flags;
 
-	pp = kmalloc(sizeof(struct smu_private), GFP_KERNEL);
+	pp = kzalloc(sizeof(struct smu_private), GFP_KERNEL);
 	if (pp == 0)
 		return -ENOMEM;
-	memset(pp, 0, sizeof(struct smu_private));
 	spin_lock_init(&pp->lock);
 	pp->mode = smu_file_commands;
 	init_waitqueue_head(&pp->wait);
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index dbb2240..17244c9 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -318,10 +318,9 @@ static struct i2c_client *attach_i2c_chi
 	if (adap == NULL)
 		return NULL;
 
-	clt = kmalloc(sizeof(struct i2c_client), GFP_KERNEL);
+	clt = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
 	if (clt == NULL)
 		return NULL;
-	memset(clt, 0, sizeof(struct i2c_client));
 
 	clt->addr = (id >> 1) & 0x7f;
 	clt->adapter = adap;
diff --git a/drivers/macintosh/therm_windtunnel.c b/drivers/macintosh/therm_windtunnel.c
index 3d0354e..5452da1 100644
--- a/drivers/macintosh/therm_windtunnel.c
+++ b/drivers/macintosh/therm_windtunnel.c
@@ -431,9 +431,8 @@ do_probe( struct i2c_adapter *adapter, i
 				     | I2C_FUNC_SMBUS_WRITE_BYTE) )
 		return 0;
 
-	if( !(cl=kmalloc(sizeof(*cl), GFP_KERNEL)) )
+	if( !(cl=kzalloc(sizeof(*cl), GFP_KERNEL)) )
 		return -ENOMEM;
-	memset( cl, 0, sizeof(struct i2c_client) );
 
 	cl->addr = addr;
 	cl->adapter = adapter;
diff --git a/drivers/macintosh/windfarm_lm75_sensor.c b/drivers/macintosh/windfarm_lm75_sensor.c
index a0fabf3..7e10c3a 100644
--- a/drivers/macintosh/windfarm_lm75_sensor.c
+++ b/drivers/macintosh/windfarm_lm75_sensor.c
@@ -117,10 +117,9 @@ static struct wf_lm75_sensor *wf_lm75_cr
 	DBG("wf_lm75: creating  %s device at address 0x%02x\n",
 	    ds1775 ? "ds1775" : "lm75", addr);
 
-	lm = kmalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
+	lm = kzalloc(sizeof(struct wf_lm75_sensor), GFP_KERNEL);
 	if (lm == NULL)
 		return NULL;
-	memset(lm, 0, sizeof(struct wf_lm75_sensor));
 
 	/* Usual rant about sensor names not beeing very consistent in
 	 * the device-tree, oh well ...
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
index ef124b7..b3ae02d 100644
--- a/drivers/md/dm-raid1.c
+++ b/drivers/md/dm-raid1.c
@@ -918,13 +918,12 @@ static struct mirror_set *alloc_context(
 
 	len = sizeof(*ms) + (sizeof(ms->mirror[0]) * nr_mirrors);
 
-	ms = kmalloc(len, GFP_KERNEL);
+	ms = kzalloc(len, GFP_KERNEL);
 	if (!ms) {
 		ti->error = "Cannot allocate mirror context";
 		return NULL;
 	}
 
-	memset(ms, 0, len);
 	spin_lock_init(&ms->lock);
 
 	ms->ti = ti;
diff --git a/drivers/media/dvb/cinergyT2/cinergyT2.c b/drivers/media/dvb/cinergyT2/cinergyT2.c
index b40af48..cff3468 100644
--- a/drivers/media/dvb/cinergyT2/cinergyT2.c
+++ b/drivers/media/dvb/cinergyT2/cinergyT2.c
@@ -905,12 +905,11 @@ static int cinergyt2_probe (struct usb_i
 	struct cinergyt2 *cinergyt2;
 	int err;
 
-	if (!(cinergyt2 = kmalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
+	if (!(cinergyt2 = kzalloc (sizeof(struct cinergyt2), GFP_KERNEL))) {
 		dprintk(1, "out of memory?!?\n");
 		return -ENOMEM;
 	}
 
-	memset (cinergyt2, 0, sizeof (struct cinergyt2));
 	usb_set_intfdata (intf, (void *) cinergyt2);
 
 	mutex_init(&cinergyt2->sem);
diff --git a/drivers/media/video/cpia2/cpia2_core.c b/drivers/media/video/cpia2/cpia2_core.c
index fd771c7..06e7007 100644
--- a/drivers/media/video/cpia2/cpia2_core.c
+++ b/drivers/media/video/cpia2/cpia2_core.c
@@ -2227,15 +2227,13 @@ struct camera_data *cpia2_init_camera_st
 {
 	struct camera_data *cam;
 
-	cam = kmalloc(sizeof(*cam), GFP_KERNEL);
+	cam = kzalloc(sizeof(*cam), GFP_KERNEL);
 
 	if (!cam) {
 		ERR("couldn't kmalloc cpia2 struct\n");
 		return NULL;
 	}
 
-	/* Default everything to 0 */
-	memset(cam, 0, sizeof(struct camera_data));
 
 	cam->present = 1;
 	mutex_init(&cam->busy_lock);
diff --git a/drivers/media/video/msp3400-driver.c b/drivers/media/video/msp3400-driver.c
index 3bb7d66..4aeefb9 100644
--- a/drivers/media/video/msp3400-driver.c
+++ b/drivers/media/video/msp3400-driver.c
@@ -814,10 +814,9 @@ static int msp_attach(struct i2c_adapter
 	int msp_product, msp_prod_hi, msp_prod_lo;
 	int msp_rom;
 
-	client = kmalloc(sizeof(*client), GFP_KERNEL);
+	client = kzalloc(sizeof(*client), GFP_KERNEL);
 	if (client == NULL)
 		return -ENOMEM;
-	memset(client, 0, sizeof(*client));
 	client->addr = address;
 	client->adapter = adapter;
 	client->driver = &i2c_driver;
diff --git a/drivers/media/video/planb.c b/drivers/media/video/planb.c
index 1455a8f..4ab1af7 100644
--- a/drivers/media/video/planb.c
+++ b/drivers/media/video/planb.c
@@ -353,9 +353,8 @@ static int planb_prepare_open(struct pla
 		* PLANB_DUMMY)*sizeof(struct dbdma_cmd)
 		+(PLANB_MAXLINES*((PLANB_MAXPIXELS+7)& ~7))/8
 		+MAX_GBUFFERS*sizeof(unsigned int);
-	if ((pb->priv_space = kmalloc (size, GFP_KERNEL)) == 0)
+	if ((pb->priv_space = kzalloc (size, GFP_KERNEL)) == 0)
 		return -ENOMEM;
-	memset ((void *) pb->priv_space, 0, size);
 	pb->overlay_last1 = pb->ch1_cmd = (volatile struct dbdma_cmd *)
 						DBDMA_ALIGN (pb->priv_space);
 	pb->overlay_last2 = pb->ch2_cmd = pb->ch1_cmd + pb->tab_size;
diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c
index 982b115..40ee5e5 100644
--- a/drivers/media/video/usbvideo/vicam.c
+++ b/drivers/media/video/usbvideo/vicam.c
@@ -1305,13 +1305,12 @@ vicam_probe( struct usb_interface *intf,
 	}
 
 	if ((cam =
-	     kmalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) {
+	     kzalloc(sizeof (struct vicam_camera), GFP_KERNEL)) == NULL) {
 		printk(KERN_WARNING
 		       "could not allocate kernel memory for vicam_camera struct\n");
 		return -ENOMEM;
 	}
 
-	memset(cam, 0, sizeof (struct vicam_camera));
 
 	cam->shutter_speed = 15;
 
diff --git a/drivers/media/video/zr364xx.c b/drivers/media/video/zr364xx.c
index b5d3364..ae50a22 100644
--- a/drivers/media/video/zr364xx.c
+++ b/drivers/media/video/zr364xx.c
@@ -800,11 +800,10 @@ static int zr364xx_probe(struct usb_inte
 	     udev->descriptor.idProduct);
 
 	if ((cam =
-	     kmalloc(sizeof(struct zr364xx_camera), GFP_KERNEL)) == NULL) {
+	     kzalloc(sizeof(struct zr364xx_camera), GFP_KERNEL)) == NULL) {
 		info("cam: out of memory !");
 		return -ENODEV;
 	}
-	memset(cam, 0x00, sizeof(struct zr364xx_camera));
 	/* save the init method used by this camera */
 	cam->method = id->driver_info;
 
diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c
index 75f401d..b4ed57e 100644
--- a/drivers/mfd/mcp-core.c
+++ b/drivers/mfd/mcp-core.c
@@ -200,9 +200,8 @@ struct mcp *mcp_host_alloc(struct device
 {
 	struct mcp *mcp;
 
-	mcp = kmalloc(sizeof(struct mcp) + size, GFP_KERNEL);
+	mcp = kzalloc(sizeof(struct mcp) + size, GFP_KERNEL);
 	if (mcp) {
-		memset(mcp, 0, sizeof(struct mcp) + size);
 		spin_lock_init(&mcp->lock);
 		mcp->attached_device.parent = parent;
 		mcp->attached_device.bus = &mcp_bus_type;
diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index 149810a..e03f1bc 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -484,12 +484,11 @@ static int ucb1x00_probe(struct mcp *mcp
 		goto err_disable;
 	}
 
-	ucb = kmalloc(sizeof(struct ucb1x00), GFP_KERNEL);
+	ucb = kzalloc(sizeof(struct ucb1x00), GFP_KERNEL);
 	ret = -ENOMEM;
 	if (!ucb)
 		goto err_disable;
 
-	memset(ucb, 0, sizeof(struct ucb1x00));
 
 	ucb->cdev.class = &ucb1x00_class;
 	ucb->cdev.dev = &mcp->attached_device;
diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
index 4f9060a..44e0252 100644
--- a/drivers/misc/asus-laptop.c
+++ b/drivers/misc/asus-laptop.c
@@ -980,10 +980,9 @@ static int asus_hotk_add(struct acpi_dev
 	printk(ASUS_NOTICE "Asus Laptop Support version %s\n",
 	       ASUS_LAPTOP_VERSION);
 
-	hotk = kmalloc(sizeof(struct asus_hotk), GFP_KERNEL);
+	hotk = kzalloc(sizeof(struct asus_hotk), GFP_KERNEL);
 	if (!hotk)
 		return -ENOMEM;
-	memset(hotk, 0, sizeof(struct asus_hotk));
 
 	hotk->handle = device->handle;
 	strcpy(acpi_device_name(device), ASUS_HOTK_DEVICE_NAME);
diff --git a/drivers/misc/ibmasm/command.c b/drivers/misc/ibmasm/command.c
index 07a085c..27988e6 100644
--- a/drivers/misc/ibmasm/command.c
+++ b/drivers/misc/ibmasm/command.c
@@ -41,18 +41,16 @@ struct command *ibmasm_new_command(struc
 	if (buffer_size > IBMASM_CMD_MAX_BUFFER_SIZE)
 		return NULL;
 
-	cmd = kmalloc(sizeof(struct command), GFP_KERNEL);
+	cmd = kzalloc(sizeof(struct command), GFP_KERNEL);
 	if (cmd == NULL)
 		return NULL;
 
-	memset(cmd, 0, sizeof(*cmd));
 
-	cmd->buffer = kmalloc(buffer_size, GFP_KERNEL);
+	cmd->buffer = kzalloc(buffer_size, GFP_KERNEL);
 	if (cmd->buffer == NULL) {
 		kfree(cmd);
 		return NULL;
 	}
-	memset(cmd->buffer, 0, buffer_size);
 	cmd->buffer_size = buffer_size;
 
 	kobject_init(&cmd->kobj);
diff --git a/drivers/misc/ibmasm/ibmasmfs.c b/drivers/misc/ibmasm/ibmasmfs.c
index c436d3d..22552d4 100644
--- a/drivers/misc/ibmasm/ibmasmfs.c
+++ b/drivers/misc/ibmasm/ibmasmfs.c
@@ -563,11 +563,10 @@ static ssize_t remote_settings_file_writ
 	if (*offset != 0)
 		return 0;
 
-	buff = kmalloc (count + 1, GFP_KERNEL);
+	buff = kzalloc (count + 1, GFP_KERNEL);
 	if (!buff)
 		return -ENOMEM;
 
-	memset(buff, 0x0, count + 1);
 
 	if (copy_from_user(buff, ubuff, count)) {
 		kfree(buff);
diff --git a/drivers/misc/ibmasm/module.c b/drivers/misc/ibmasm/module.c
index 2f3bddf..80d2798 100644
--- a/drivers/misc/ibmasm/module.c
+++ b/drivers/misc/ibmasm/module.c
@@ -77,13 +77,12 @@ static int __devinit ibmasm_init_one(str
 	/* vnc client won't work without bus-mastering */
 	pci_set_master(pdev);
 
-	sp = kmalloc(sizeof(struct service_processor), GFP_KERNEL);
+	sp = kzalloc(sizeof(struct service_processor), GFP_KERNEL);
 	if (sp == NULL) {
 		dev_err(&pdev->dev, "Failed to allocate memory\n");
 		result = -ENOMEM;
 		goto error_kmalloc;
 	}
-	memset(sp, 0, sizeof(struct service_processor));
 
 	spin_lock_init(&sp->lock);
 	INIT_LIST_HEAD(&sp->command_queue);
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 540ff4b..148eac3 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -409,13 +409,12 @@ static struct mmc_blk_data *mmc_blk_allo
 		return ERR_PTR(-ENOSPC);
 	__set_bit(devidx, dev_use);
 
-	md = kmalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
+	md = kzalloc(sizeof(struct mmc_blk_data), GFP_KERNEL);
 	if (!md) {
 		ret = -ENOMEM;
 		goto out;
 	}
 
-	memset(md, 0, sizeof(struct mmc_blk_data));
 
 	/*
 	 * Set the read-only status based on the supported commands
diff --git a/drivers/mmc/core/sysfs.c b/drivers/mmc/core/sysfs.c
index 843b1fb..610e193 100644
--- a/drivers/mmc/core/sysfs.c
+++ b/drivers/mmc/core/sysfs.c
@@ -259,9 +259,8 @@ struct mmc_host *mmc_alloc_host_sysfs(in
 {
 	struct mmc_host *host;
 
-	host = kmalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
+	host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
 	if (host) {
-		memset(host, 0, sizeof(struct mmc_host) + extra);
 
 		host->parent = dev;
 		host->class_dev.parent = dev;
diff --git a/drivers/net/b44.c b/drivers/net/b44.c
index 879a2ff..50898d0 100644
--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -1522,14 +1522,13 @@ static void b44_setup_pseudo_magicp(stru
 	u8 *pwol_pattern;
 	u8 pwol_mask[B44_PMASK_SIZE];
 
-	pwol_pattern = kmalloc(B44_PATTERN_SIZE, GFP_KERNEL);
+	pwol_pattern = kzalloc(B44_PATTERN_SIZE, GFP_KERNEL);
 	if (!pwol_pattern) {
 		printk(KERN_ERR PFX "Memory not available for WOL\n");
 		return;
 	}
 
 	/* Ipv4 magic packet pattern - pattern 0.*/
-	memset(pwol_pattern, 0, B44_PATTERN_SIZE);
 	memset(pwol_mask, 0, B44_PMASK_SIZE);
 	plen0 = b44_magic_pattern(bp->dev->dev_addr, pwol_pattern, pwol_mask,
 				  B44_ETHIPV4UDP_HLEN);
diff --git a/drivers/net/bsd_comp.c b/drivers/net/bsd_comp.c
index 7845eaf..202d4a4 100644
--- a/drivers/net/bsd_comp.c
+++ b/drivers/net/bsd_comp.c
@@ -395,14 +395,13 @@ static void *bsd_alloc (unsigned char *o
  * Allocate the main control structure for this instance.
  */
     maxmaxcode = MAXCODE(bits);
-    db         = kmalloc(sizeof (struct bsd_db),
+    db         = kzalloc(sizeof (struct bsd_db),
 					    GFP_KERNEL);
     if (!db)
       {
 	return NULL;
       }
 
-    memset (db, 0, sizeof(struct bsd_db));
 /*
  * Allocate space for the dictionary. This may be more than one page in
  * length.
diff --git a/drivers/net/forcedeth.c b/drivers/net/forcedeth.c
index 42ba1c0..d383455 100644
--- a/drivers/net/forcedeth.c
+++ b/drivers/net/forcedeth.c
@@ -4995,12 +4995,10 @@ static int __devinit nv_probe(struct pci
 			goto out_unmap;
 		np->tx_ring.ex = &np->rx_ring.ex[np->rx_ring_size];
 	}
-	np->rx_skb = kmalloc(sizeof(struct nv_skb_map) * np->rx_ring_size, GFP_KERNEL);
-	np->tx_skb = kmalloc(sizeof(struct nv_skb_map) * np->tx_ring_size, GFP_KERNEL);
+	np->rx_skb = kcalloc(sizeof(struct nv_skb_map), np->rx_ring_size, GFP_KERNEL);
+	np->tx_skb = kcalloc(sizeof(struct nv_skb_map), np->tx_ring_size, GFP_KERNEL);
 	if (!np->rx_skb || !np->tx_skb)
 		goto out_freering;
-	memset(np->rx_skb, 0, sizeof(struct nv_skb_map) * np->rx_ring_size);
-	memset(np->tx_skb, 0, sizeof(struct nv_skb_map) * np->tx_ring_size);
 
 	dev->open = nv_open;
 	dev->stop = nv_close;
diff --git a/drivers/net/hamradio/dmascc.c b/drivers/net/hamradio/dmascc.c
index 3be8c50..d580451 100644
--- a/drivers/net/hamradio/dmascc.c
+++ b/drivers/net/hamradio/dmascc.c
@@ -454,7 +454,7 @@ static int __init setup_adapter(int card
 	char *chipnames[] = CHIPNAMES;
 
 	/* Allocate memory */
-	info = kmalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
+	info = kzalloc(sizeof(struct scc_info), GFP_KERNEL | GFP_DMA);
 	if (!info) {
 		printk(KERN_ERR "dmascc: "
 		       "could not allocate memory for %s at %#3x\n",
@@ -462,8 +462,6 @@ static int __init setup_adapter(int card
 		goto out;
 	}
 
-	/* Initialize what is necessary for write_scc and write_scc_data */
-	memset(info, 0, sizeof(struct scc_info));
 
 	info->dev[0] = alloc_netdev(0, "", dev_setup);
 	if (!info->dev[0]) {
diff --git a/drivers/net/irda/irport.c b/drivers/net/irda/irport.c
index 3078c41..2073245 100644
--- a/drivers/net/irda/irport.c
+++ b/drivers/net/irda/irport.c
@@ -164,14 +164,13 @@ irport_open(int i, unsigned int iobase, 
 	
 	/* Allocate memory if needed */
 	if (self->tx_buff.truesize > 0) {
-		self->tx_buff.head = kmalloc(self->tx_buff.truesize,
+		self->tx_buff.head = kzalloc(self->tx_buff.truesize,
 						      GFP_KERNEL);
 		if (self->tx_buff.head == NULL) {
 			IRDA_ERROR("%s(), can't allocate memory for "
 				   "transmit buffer!\n", __FUNCTION__);
 			goto err_out4;
 		}
-		memset(self->tx_buff.head, 0, self->tx_buff.truesize);
 	}	
 	self->tx_buff.data = self->tx_buff.head;
 
diff --git a/drivers/net/irda/irtty-sir.c b/drivers/net/irda/irtty-sir.c
index ad18573..6f5f697 100644
--- a/drivers/net/irda/irtty-sir.c
+++ b/drivers/net/irda/irtty-sir.c
@@ -505,10 +505,9 @@ static int irtty_open(struct tty_struct 
 	}
 
 	/* allocate private device info block */
-	priv = kmalloc(sizeof(*priv), GFP_KERNEL);
+	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
 	if (!priv)
 		goto out_put;
-	memset(priv, 0, sizeof(*priv));
 
 	priv->magic = IRTTY_MAGIC;
 	priv->tty = tty;
diff --git a/drivers/net/iseries_veth.c b/drivers/net/iseries_veth.c
index 347d50c..0433c41 100644
--- a/drivers/net/iseries_veth.c
+++ b/drivers/net/iseries_veth.c
@@ -822,10 +822,9 @@ static int veth_init_connection(u8 rlp)
 	     || ! HvLpConfig_doLpsCommunicateOnVirtualLan(this_lp, rlp) )
 		return 0;
 
-	cnx = kmalloc(sizeof(*cnx), GFP_KERNEL);
+	cnx = kzalloc(sizeof(*cnx), GFP_KERNEL);
 	if (! cnx)
 		return -ENOMEM;
-	memset(cnx, 0, sizeof(*cnx));
 
 	cnx->remote_lp = rlp;
 	spin_lock_init(&cnx->lock);
@@ -852,14 +851,13 @@ static int veth_init_connection(u8 rlp)
 	if (rc != 0)
 		return rc;
 
-	msgs = kmalloc(VETH_NUMBUFFERS * sizeof(struct veth_msg), GFP_KERNEL);
+	msgs = kcalloc(VETH_NUMBUFFERS, sizeof(struct veth_msg), GFP_KERNEL);
 	if (! msgs) {
 		veth_error("Can't allocate buffers for LPAR %d.\n", rlp);
 		return -ENOMEM;
 	}
 
 	cnx->msgs = msgs;
-	memset(msgs, 0, VETH_NUMBUFFERS * sizeof(struct veth_msg));
 
 	for (i = 0; i < VETH_NUMBUFFERS; i++) {
 		msgs[i].token = i;
diff --git a/drivers/net/lance.c b/drivers/net/lance.c
index 0fe96c8..ea415ea 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -533,11 +533,10 @@ static int __init lance_probe1(struct ne
 	dev->base_addr = ioaddr;
 	/* Make certain the data structures used by the LANCE are aligned and DMAble. */
 
-	lp = kmalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL);
+	lp = kzalloc(sizeof(*lp), GFP_DMA | GFP_KERNEL);
 	if(lp==NULL)
 		return -ENODEV;
 	if (lance_debug > 6) printk(" (#0x%05lx)", (unsigned long)lp);
-	memset(lp, 0, sizeof(*lp));
 	dev->priv = lp;
 	lp->name = chipname;
 	lp->rx_buffs = (unsigned long)kmalloc(PKT_BUF_SZ*RX_RING_SIZE,
diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
index 0d1c7a4..ea9414c 100644
--- a/drivers/net/pcmcia/com20020_cs.c
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -147,7 +147,7 @@ static int com20020_probe(struct pcmcia_
     DEBUG(0, "com20020_attach()\n");
 
     /* Create new network device */
-    info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
+    info = kzalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
     if (!info)
 	goto fail_alloc_info;
 
@@ -155,7 +155,6 @@ static int com20020_probe(struct pcmcia_
     if (!dev)
 	goto fail_alloc_dev;
 
-    memset(info, 0, sizeof(struct com20020_dev_t));
     lp = dev->priv;
     lp->timeout = timeout;
     lp->backplane = backplane;
diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c
index 4ecb8ca..64d5dcd 100644
--- a/drivers/net/pcmcia/ibmtr_cs.c
+++ b/drivers/net/pcmcia/ibmtr_cs.c
@@ -146,9 +146,8 @@ static int __devinit ibmtr_attach(struct
     DEBUG(0, "ibmtr_attach()\n");
 
     /* Create new token-ring device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL); 
+    info = kzalloc(sizeof(*info), GFP_KERNEL); 
     if (!info) return -ENOMEM;
-    memset(info,0,sizeof(*info));
     dev = alloc_trdev(sizeof(struct tok_info));
     if (!dev) {
 	kfree(info);
diff --git a/drivers/net/ppp_async.c b/drivers/net/ppp_async.c
index caabbc4..27f5b90 100644
--- a/drivers/net/ppp_async.c
+++ b/drivers/net/ppp_async.c
@@ -159,12 +159,11 @@ ppp_asynctty_open(struct tty_struct *tty
 	int err;
 
 	err = -ENOMEM;
-	ap = kmalloc(sizeof(*ap), GFP_KERNEL);
+	ap = kzalloc(sizeof(*ap), GFP_KERNEL);
 	if (ap == 0)
 		goto out;
 
 	/* initialize the asyncppp structure */
-	memset(ap, 0, sizeof(*ap));
 	ap->tty = tty;
 	ap->mru = PPP_MRU;
 	spin_lock_init(&ap->xmit_lock);
diff --git a/drivers/net/ppp_deflate.c b/drivers/net/ppp_deflate.c
index 72c8d66..eb98b66 100644
--- a/drivers/net/ppp_deflate.c
+++ b/drivers/net/ppp_deflate.c
@@ -121,12 +121,11 @@ static void *z_comp_alloc(unsigned char 
 	if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
 		return NULL;
 
-	state = kmalloc(sizeof(*state),
+	state = kzalloc(sizeof(*state),
 						     GFP_KERNEL);
 	if (state == NULL)
 		return NULL;
 
-	memset (state, 0, sizeof (struct ppp_deflate_state));
 	state->strm.next_in   = NULL;
 	state->w_size         = w_size;
 	state->strm.workspace = vmalloc(zlib_deflate_workspacesize());
@@ -341,11 +340,10 @@ static void *z_decomp_alloc(unsigned cha
 	if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
 		return NULL;
 
-	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		return NULL;
 
-	memset (state, 0, sizeof (struct ppp_deflate_state));
 	state->w_size         = w_size;
 	state->strm.next_out  = NULL;
 	state->strm.workspace = kmalloc(zlib_inflate_workspacesize(),
diff --git a/drivers/net/ppp_mppe.c b/drivers/net/ppp_mppe.c
index d5bdd25..f79cf87 100644
--- a/drivers/net/ppp_mppe.c
+++ b/drivers/net/ppp_mppe.c
@@ -200,11 +200,10 @@ static void *mppe_alloc(unsigned char *o
 	    || options[0] != CI_MPPE || options[1] != CILEN_MPPE)
 		goto out;
 
-	state = kmalloc(sizeof(*state), GFP_KERNEL);
+	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
 		goto out;
 
-	memset(state, 0, sizeof(*state));
 
 	state->arc4 = crypto_alloc_blkcipher("ecb(arc4)", 0, CRYPTO_ALG_ASYNC);
 	if (IS_ERR(state->arc4)) {
diff --git a/drivers/net/ppp_synctty.c b/drivers/net/ppp_synctty.c
index 5918fab..ce64032 100644
--- a/drivers/net/ppp_synctty.c
+++ b/drivers/net/ppp_synctty.c
@@ -207,13 +207,12 @@ ppp_sync_open(struct tty_struct *tty)
 	struct syncppp *ap;
 	int err;
 
-	ap = kmalloc(sizeof(*ap), GFP_KERNEL);
+	ap = kzalloc(sizeof(*ap), GFP_KERNEL);
 	err = -ENOMEM;
 	if (ap == 0)
 		goto out;
 
 	/* initialize the syncppp structure */
-	memset(ap, 0, sizeof(*ap));
 	ap->tty = tty;
 	ap->mru = PPP_MRU;
 	spin_lock_init(&ap->xmit_lock);
diff --git a/drivers/net/shaper.c b/drivers/net/shaper.c
index e886e8d..4c3d98f 100644
--- a/drivers/net/shaper.c
+++ b/drivers/net/shaper.c
@@ -600,10 +600,9 @@ static int __init shaper_init(void)
 		return -ENODEV;
 
 	alloc_size = sizeof(*dev) * shapers;
-	devs = kmalloc(alloc_size, GFP_KERNEL);
+	devs = kzalloc(alloc_size, GFP_KERNEL);
 	if (!devs)
 		return -ENOMEM;
-	memset(devs, 0, alloc_size);
 
 	for (i = 0; i < shapers; i++) {
 
diff --git a/drivers/net/wan/c101.c b/drivers/net/wan/c101.c
index 6b63b35..8ead774 100644
--- a/drivers/net/wan/c101.c
+++ b/drivers/net/wan/c101.c
@@ -315,12 +315,11 @@ static int __init c101_run(unsigned long
 		return -ENODEV;
 	}
 
-	card = kmalloc(sizeof(card_t), GFP_KERNEL);
+	card = kzalloc(sizeof(card_t), GFP_KERNEL);
 	if (card == NULL) {
 		printk(KERN_ERR "c101: unable to allocate memory\n");
 		return -ENOBUFS;
 	}
-	memset(card, 0, sizeof(card_t));
 
 	card->dev = alloc_hdlcdev(card);
 	if (!card->dev) {
diff --git a/drivers/net/wan/cosa.c b/drivers/net/wan/cosa.c
index 9ef49ce..89a06b3 100644
--- a/drivers/net/wan/cosa.c
+++ b/drivers/net/wan/cosa.c
@@ -572,13 +572,11 @@ #endif
 	sprintf(cosa->name, "cosa%d", cosa->num);
 
 	/* Initialize the per-channel data */
-	cosa->chan = kmalloc(sizeof(struct channel_data)*cosa->nchannels,
-			     GFP_KERNEL);
+	cosa->chan = kcalloc(sizeof(struct channel_data), cosa->nchannels, GFP_KERNEL);
 	if (!cosa->chan) {
 	        err = -ENOMEM;
 		goto err_out3;
 	}
-	memset(cosa->chan, 0, sizeof(struct channel_data)*cosa->nchannels);
 	for (i=0; i<cosa->nchannels; i++) {
 		cosa->chan[i].cosa = cosa;
 		cosa->chan[i].num = i;
diff --git a/drivers/net/wan/cycx_main.c b/drivers/net/wan/cycx_main.c
index 6e5f1c8..8b6f22c 100644
--- a/drivers/net/wan/cycx_main.c
+++ b/drivers/net/wan/cycx_main.c
@@ -113,12 +113,10 @@ static int __init cycx_init(void)
 	/* Verify number of cards and allocate adapter data space */
 	cycx_ncards = min_t(int, cycx_ncards, CYCX_MAX_CARDS);
 	cycx_ncards = max_t(int, cycx_ncards, 1);
-	cycx_card_array = kmalloc(sizeof(struct cycx_device) * cycx_ncards,
-				  GFP_KERNEL);
+	cycx_card_array = kcalloc(sizeof(struct cycx_device), cycx_ncards, GFP_KERNEL);
 	if (!cycx_card_array)
 		goto out;
 
-	memset(cycx_card_array, 0, sizeof(struct cycx_device) * cycx_ncards);
 
 	/* Register adapters with WAN router */
 	for (cnt = 0; cnt < cycx_ncards; ++cnt) {
diff --git a/drivers/net/wan/cycx_x25.c b/drivers/net/wan/cycx_x25.c
index 016b3ff..a8af28b 100644
--- a/drivers/net/wan/cycx_x25.c
+++ b/drivers/net/wan/cycx_x25.c
@@ -376,11 +376,10 @@ static int cycx_wan_new_if(struct wan_de
 	}
 
 	/* allocate and initialize private data */
-	chan = kmalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
+	chan = kzalloc(sizeof(struct cycx_x25_channel), GFP_KERNEL);
 	if (!chan)
 		return -ENOMEM;
 
-	memset(chan, 0, sizeof(*chan));
 	strcpy(chan->name, conf->name);
 	chan->card = card;
 	chan->link = conf->port;
diff --git a/drivers/net/wan/dscc4.c b/drivers/net/wan/dscc4.c
index dca0244..50d2f91 100644
--- a/drivers/net/wan/dscc4.c
+++ b/drivers/net/wan/dscc4.c
@@ -890,12 +890,11 @@ static int dscc4_found1(struct pci_dev *
 	struct dscc4_dev_priv *root;
 	int i, ret = -ENOMEM;
 
-	root = kmalloc(dev_per_card*sizeof(*root), GFP_KERNEL);
+	root = kcalloc(dev_per_card, sizeof(*root), GFP_KERNEL);
 	if (!root) {
 		printk(KERN_ERR "%s: can't allocate data\n", DRV_NAME);
 		goto err_out;
 	}
-	memset(root, 0, dev_per_card*sizeof(*root));
 
 	for (i = 0; i < dev_per_card; i++) {
 		root[i].dev = alloc_hdlcdev(root + i);
@@ -903,12 +902,11 @@ static int dscc4_found1(struct pci_dev *
 			goto err_free_dev;
 	}
 
-	ppriv = kmalloc(sizeof(*ppriv), GFP_KERNEL);
+	ppriv = kzalloc(sizeof(*ppriv), GFP_KERNEL);
 	if (!ppriv) {
 		printk(KERN_ERR "%s: can't allocate private data\n", DRV_NAME);
 		goto err_free_dev;
 	}
-	memset(ppriv, 0, sizeof(struct dscc4_pci_priv));
 
 	ppriv->root = root;
 	spin_lock_init(&ppriv->lock);
diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 58a53b6..12dae8e 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c
@@ -2476,13 +2476,12 @@ fst_add_one(struct pci_dev *pdev, const 
 	}
 
 	/* Allocate driver private data */
-	card = kmalloc(sizeof (struct fst_card_info), GFP_KERNEL);
+	card = kzalloc(sizeof (struct fst_card_info), GFP_KERNEL);
 	if (card == NULL) {
 		printk_err("FarSync card found but insufficient memory for"
 			   " driver storage\n");
 		return -ENOMEM;
 	}
-	memset(card, 0, sizeof (struct fst_card_info));
 
 	/* Try to enable the device */
 	if ((err = pci_enable_device(pdev)) != 0) {
diff --git a/drivers/net/wan/hostess_sv11.c b/drivers/net/wan/hostess_sv11.c
index 9ba3e4e..bf5f8d9 100644
--- a/drivers/net/wan/hostess_sv11.c
+++ b/drivers/net/wan/hostess_sv11.c
@@ -231,11 +231,10 @@ static struct sv11_device *sv11_init(int
 		return NULL;
 	}
 	
-	sv = kmalloc(sizeof(struct sv11_device), GFP_KERNEL);
+	sv = kzalloc(sizeof(struct sv11_device), GFP_KERNEL);
 	if(!sv)
 		goto fail3;
 			
-	memset(sv, 0, sizeof(*sv));
 	sv->if_ptr=&sv->netdev;
 	
 	sv->netdev.dev = alloc_netdev(0, "hdlc%d", sv11_setup);
diff --git a/drivers/net/wan/n2.c b/drivers/net/wan/n2.c
index 5c322df..cbdf0b7 100644
--- a/drivers/net/wan/n2.c
+++ b/drivers/net/wan/n2.c
@@ -351,12 +351,11 @@ static int __init n2_run(unsigned long i
 		return -ENODEV;
 	}
 
-	card = kmalloc(sizeof(card_t), GFP_KERNEL);
+	card = kzalloc(sizeof(card_t), GFP_KERNEL);
 	if (card == NULL) {
 		printk(KERN_ERR "n2: unable to allocate memory\n");
 		return -ENOBUFS;
 	}
-	memset(card, 0, sizeof(card_t));
 
 	card->ports[0].dev = alloc_hdlcdev(&card->ports[0]);
 	card->ports[1].dev = alloc_hdlcdev(&card->ports[1]);
diff --git a/drivers/net/wan/pc300_drv.c b/drivers/net/wan/pc300_drv.c
index 999bf71..6dcf5f0 100644
--- a/drivers/net/wan/pc300_drv.c
+++ b/drivers/net/wan/pc300_drv.c
@@ -3455,7 +3455,7 @@ #endif
 	if ((err = pci_enable_device(pdev)) < 0)
 		return err;
 
-	card = kmalloc(sizeof(pc300_t), GFP_KERNEL);
+	card = kzalloc(sizeof(pc300_t), GFP_KERNEL);
 	if (card == NULL) {
 		printk("PC300 found at RAM 0x%016llx, "
 		       "but could not allocate card structure.\n",
@@ -3463,7 +3463,6 @@ #endif
 		err = -ENOMEM;
 		goto err_disable_dev;
 	}
-	memset(card, 0, sizeof(pc300_t));
 
 	err = -ENODEV;
 
diff --git a/drivers/net/wan/pc300too.c b/drivers/net/wan/pc300too.c
index aff05db..148c2e7 100644
--- a/drivers/net/wan/pc300too.c
+++ b/drivers/net/wan/pc300too.c
@@ -335,14 +335,13 @@ #endif
 		return i;
 	}
 
-	card = kmalloc(sizeof(card_t), GFP_KERNEL);
+	card = kzalloc(sizeof(card_t), GFP_KERNEL);
 	if (card == NULL) {
 		printk(KERN_ERR "pc300: unable to allocate memory\n");
 		pci_release_regions(pdev);
 		pci_disable_device(pdev);
 		return -ENOBUFS;
 	}
-	memset(card, 0, sizeof(card_t));
 	pci_set_drvdata(pdev, card);
 
 	if (pdev->device == PCI_DEVICE_ID_PC300_TE_1 ||
diff --git a/drivers/net/wan/pci200syn.c b/drivers/net/wan/pci200syn.c
index ca06a00..91bc6f7 100644
--- a/drivers/net/wan/pci200syn.c
+++ b/drivers/net/wan/pci200syn.c
@@ -313,14 +313,13 @@ #endif
 		return i;
 	}
 
-	card = kmalloc(sizeof(card_t), GFP_KERNEL);
+	card = kzalloc(sizeof(card_t), GFP_KERNEL);
 	if (card == NULL) {
 		printk(KERN_ERR "pci200syn: unable to allocate memory\n");
 		pci_release_regions(pdev);
 		pci_disable_device(pdev);
 		return -ENOBUFS;
 	}
-	memset(card, 0, sizeof(card_t));
 	pci_set_drvdata(pdev, card);
 	card->ports[0].dev = alloc_hdlcdev(&card->ports[0]);
 	card->ports[1].dev = alloc_hdlcdev(&card->ports[1]);
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
index 6a485f0..792e588 100644
--- a/drivers/net/wan/sdla.c
+++ b/drivers/net/wan/sdla.c
@@ -1196,10 +1196,9 @@ static int sdla_xfer(struct net_device *
 		
 	if (read)
 	{	
-		temp = kmalloc(mem.len, GFP_KERNEL);
+		temp = kzalloc(mem.len, GFP_KERNEL);
 		if (!temp)
 			return(-ENOMEM);
-		memset(temp, 0, mem.len);
 		sdla_read(dev, mem.addr, temp, mem.len);
 		if(copy_to_user(mem.data, temp, mem.len))
 		{
diff --git a/drivers/net/wan/sealevel.c b/drivers/net/wan/sealevel.c
index 1313581..11276bf 100644
--- a/drivers/net/wan/sealevel.c
+++ b/drivers/net/wan/sealevel.c
@@ -270,11 +270,10 @@ static __init struct slvl_board *slvl_in
 		return NULL;
 	}
 	
-	b = kmalloc(sizeof(struct slvl_board), GFP_KERNEL);
+	b = kzalloc(sizeof(struct slvl_board), GFP_KERNEL);
 	if(!b)
 		goto fail3;
 
-	memset(b, 0, sizeof(*b));
 	if (!(b->dev[0]= slvl_alloc(iobase, irq)))
 		goto fail2;
 
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index c736015..3c78f98 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -599,7 +599,7 @@ #endif
 	}
 
 	alloc_size = sizeof(card_t) + ports * sizeof(port_t);
-	card = kmalloc(alloc_size, GFP_KERNEL);
+	card = kzalloc(alloc_size, GFP_KERNEL);
 	if (card == NULL) {
 		printk(KERN_ERR "wanXL %s: unable to allocate memory\n",
 		       pci_name(pdev));
@@ -607,7 +607,6 @@ #endif
 		pci_disable_device(pdev);
 		return -ENOBUFS;
 	}
-	memset(card, 0, alloc_size);
 
 	pci_set_drvdata(pdev, card);
 	card->pdev = pdev;
diff --git a/drivers/net/wan/x25_asy.c b/drivers/net/wan/x25_asy.c
index 1c9edd9..5bceb2c 100644
--- a/drivers/net/wan/x25_asy.c
+++ b/drivers/net/wan/x25_asy.c
@@ -786,14 +786,12 @@ static int __init init_x25_asy(void)
 	printk(KERN_INFO "X.25 async: version 0.00 ALPHA "
 			"(dynamic channels, max=%d).\n", x25_asy_maxdev );
 
-	x25_asy_devs = kmalloc(sizeof(struct net_device *)*x25_asy_maxdev, 
-			       GFP_KERNEL);
+	x25_asy_devs = kcalloc(sizeof(struct net_device*), x25_asy_maxdev, GFP_KERNEL);
 	if (!x25_asy_devs) {
 		printk(KERN_WARNING "X25 async: Can't allocate x25_asy_ctrls[] "
 				"array! Uaargh! (-> No X.25 available)\n");
 		return -ENOMEM;
 	}
-	memset(x25_asy_devs, 0, sizeof(struct net_device *)*x25_asy_maxdev); 
 
 	return tty_register_ldisc(N_X25, &x25_ldisc);
 }
diff --git a/drivers/nubus/nubus.c b/drivers/nubus/nubus.c
index 3a0a3a7..e503c9c 100644
--- a/drivers/nubus/nubus.c
+++ b/drivers/nubus/nubus.c
@@ -466,9 +466,8 @@ static struct nubus_dev* __init
 		       parent->base, dir.base);
 
 	/* Actually we should probably panic if this fails */
-	if ((dev = kmalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
+	if ((dev = kzalloc(sizeof(*dev), GFP_ATOMIC)) == NULL)
 		return NULL;	
-	memset(dev, 0, sizeof(*dev));
 	dev->resid = parent->type;
 	dev->directory = dir.base;
 	dev->board = board;
@@ -800,9 +799,8 @@ static struct nubus_board* __init nubus_
 	nubus_rewind(&rp, FORMAT_BLOCK_SIZE, bytelanes);
 
 	/* Actually we should probably panic if this fails */
-	if ((board = kmalloc(sizeof(*board), GFP_ATOMIC)) == NULL)
+	if ((board = kzalloc(sizeof(*board), GFP_ATOMIC)) == NULL)
 		return NULL;	
-	memset(board, 0, sizeof(*board));
 	board->fblock = rp;
 
 	/* Dump the format block for debugging purposes */
diff --git a/drivers/parport/parport_cs.c b/drivers/parport/parport_cs.c
index 8b7d84e..802a81d 100644
--- a/drivers/parport/parport_cs.c
+++ b/drivers/parport/parport_cs.c
@@ -105,9 +105,8 @@ static int parport_probe(struct pcmcia_d
     DEBUG(0, "parport_attach()\n");
 
     /* Create new parport device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL);
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
     if (!info) return -ENOMEM;
-    memset(info, 0, sizeof(*info));
     link->priv = info;
     info->p_dev = link;
 
diff --git a/drivers/parport/parport_serial.c b/drivers/parport/parport_serial.c
index 90ea3b8..bd6ad8b 100644
--- a/drivers/parport/parport_serial.c
+++ b/drivers/parport/parport_serial.c
@@ -324,10 +324,9 @@ static int __devinit parport_serial_pci_
 	struct parport_serial_private *priv;
 	int err;
 
-	priv = kmalloc (sizeof *priv, GFP_KERNEL);
+	priv = kzalloc (sizeof *priv, GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
-	memset(priv, 0, sizeof(struct parport_serial_private));
 	pci_set_drvdata (dev, priv);
 
 	err = pci_enable_device (dev);
diff --git a/drivers/pci/pcie/aer/aerdrv.c b/drivers/pci/pcie/aer/aerdrv.c
index db6ad8e..c344ebf 100644
--- a/drivers/pci/pcie/aer/aerdrv.c
+++ b/drivers/pci/pcie/aer/aerdrv.c
@@ -148,11 +148,10 @@ static struct aer_rpc* aer_alloc_rpc(str
 {
 	struct aer_rpc *rpc;
 
-	if (!(rpc = kmalloc(sizeof(struct aer_rpc),
+	if (!(rpc = kzalloc(sizeof(struct aer_rpc),
 		GFP_KERNEL)))
 		return NULL;
 
-	memset(rpc, 0, sizeof(struct aer_rpc));
 	/*
 	 * Initialize Root lock access, e_lock, to Root Error Status Reg,
 	 * Root Error ID Reg, and Root error producer/consumer index.
diff --git a/drivers/pnp/core.c b/drivers/pnp/core.c
index 3e20b1c..8e7b2dd 100644
--- a/drivers/pnp/core.c
+++ b/drivers/pnp/core.c
@@ -35,12 +35,11 @@ void *pnp_alloc(long size)
 {
 	void *result;
 
-	result = kmalloc(size, GFP_KERNEL);
+	result = kzalloc(size, GFP_KERNEL);
 	if (!result){
 		printk(KERN_ERR "pnp: Out of Memory\n");
 		return NULL;
 	}
-	memset(result, 0, size);
 	return result;
 }
 
diff --git a/drivers/rapidio/rio-scan.c b/drivers/rapidio/rio-scan.c
index f935c1f..4442072 100644
--- a/drivers/rapidio/rio-scan.c
+++ b/drivers/rapidio/rio-scan.c
@@ -297,11 +297,10 @@ static struct rio_dev *rio_setup_device(
 	struct rio_switch *rswitch;
 	int result, rdid;
 
-	rdev = kmalloc(sizeof(struct rio_dev), GFP_KERNEL);
+	rdev = kzalloc(sizeof(struct rio_dev), GFP_KERNEL);
 	if (!rdev)
 		goto out;
 
-	memset(rdev, 0, sizeof(struct rio_dev));
 	rdev->net = net;
 	rio_mport_read_config_32(port, destid, hopcount, RIO_DEV_ID_CAR,
 				 &result);
@@ -801,9 +800,8 @@ static struct rio_net __devinit *rio_all
 {
 	struct rio_net *net;
 
-	net = kmalloc(sizeof(struct rio_net), GFP_KERNEL);
+	net = kzalloc(sizeof(struct rio_net), GFP_KERNEL);
 	if (net) {
-		memset(net, 0, sizeof(struct rio_net));
 		INIT_LIST_HEAD(&net->node);
 		INIT_LIST_HEAD(&net->devices);
 		INIT_LIST_HEAD(&net->mports);
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index e765875..80e7a53 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -131,10 +131,9 @@ tape_34xx_schedule_work(struct tape_devi
 {
 	struct tape_34xx_work *p;
 
-	if ((p = kmalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
+	if ((p = kzalloc(sizeof(*p), GFP_ATOMIC)) == NULL)
 		return -ENOMEM;
 
-	memset(p, 0, sizeof(*p));
 	INIT_WORK(&p->work, tape_34xx_work_handler);
 
 	p->device = tape_get_device_reference(device);
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 348bb7b..023455a 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -317,8 +317,8 @@ #endif
 		CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
 		return -ENOMEM;
 	}
-	privptr->p_mtc_envelope= kmalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
-	privptr->p_env = kmalloc(sizeof(struct claw_env), GFP_KERNEL);
+	privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL);
+	privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL);
         if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) {
                 probe_error(cgdev);
 		put_device(&cgdev->dev);
@@ -327,8 +327,6 @@ #endif
 		CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM);
                 return -ENOMEM;
         }
-	memset(privptr->p_mtc_envelope, 0x00, MAX_ENVELOPE_SIZE);
-	memset(privptr->p_env, 0x00, sizeof(struct claw_env));
 	memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8);
 	memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8);
 	memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8);
@@ -3924,7 +3922,7 @@ #endif
 	snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", cdev->dev.bus_id);
 	ccw_device_get_id(cdev, &dev_id);
 	p_ch->devno = dev_id.devno;
-	if ((p_ch->irb = kmalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) {
+	if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) {
 		printk(KERN_WARNING "%s Out of memory in %s for irb\n",
 			p_ch->id,__FUNCTION__);
 #ifdef FUNCTRACE
@@ -3933,7 +3931,6 @@ #ifdef FUNCTRACE
 #endif
 		return -ENOMEM;
 	}
-	memset(p_ch->irb, 0, sizeof (struct irb));
 #ifdef FUNCTRACE
         	printk(KERN_INFO "%s:%s Exit on line %d\n",
 			cdev->dev.bus_id,__FUNCTION__,__LINE__);
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index aef66bc..fafadd8 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -1626,7 +1626,7 @@ zfcp_erp_schedule_work(struct zfcp_unit 
 {
 	struct zfcp_erp_add_work *p;
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p) {
 		ZFCP_LOG_NORMAL("error: Out of resources. Could not register "
 				"the FCP-LUN 0x%Lx connected to "
@@ -1639,7 +1639,6 @@ zfcp_erp_schedule_work(struct zfcp_unit 
 	}
 
 	zfcp_unit_get(unit);
-	memset(p, 0, sizeof(*p));
 	atomic_set_mask(ZFCP_STATUS_UNIT_SCSI_WORK_PENDING, &unit->status);
 	INIT_WORK(&p->work, zfcp_erp_scsi_scan);
 	p->unit = unit;
diff --git a/drivers/sbus/char/bbc_i2c.c b/drivers/sbus/char/bbc_i2c.c
index 178155b..fbadd4d 100644
--- a/drivers/sbus/char/bbc_i2c.c
+++ b/drivers/sbus/char/bbc_i2c.c
@@ -156,10 +156,9 @@ struct bbc_i2c_client *bbc_i2c_attach(st
 
 	if (!bp)
 		return NULL;
-	client = kmalloc(sizeof(*client), GFP_KERNEL);
+	client = kzalloc(sizeof(*client), GFP_KERNEL);
 	if (!client)
 		return NULL;
-	memset(client, 0, sizeof(*client));
 	client->bp = bp;
 	client->echild = echild;
 	client->bus = echild->resource[0].start;
diff --git a/drivers/sbus/char/vfc_dev.c b/drivers/sbus/char/vfc_dev.c
index 6afc7e5..4b5918b 100644
--- a/drivers/sbus/char/vfc_dev.c
+++ b/drivers/sbus/char/vfc_dev.c
@@ -656,12 +656,9 @@ static int vfc_probe(void)
 	if (!cards)
 		return -ENODEV;
 
-	vfc_dev_lst = kmalloc(sizeof(struct vfc_dev *) *
-						 (cards+1),
-						 GFP_KERNEL);
+	vfc_dev_lst = kcalloc(sizeof(struct vfc_dev*), (cards+1), GFP_KERNEL);
 	if (vfc_dev_lst == NULL)
 		return -ENOMEM;
-	memset(vfc_dev_lst, 0, sizeof(struct vfc_dev *) * (cards + 1));
 	vfc_dev_lst[cards] = NULL;
 
 	ret = register_chrdev(VFC_MAJOR, vfcstr, &vfc_fops);
diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c
index eb766c3..09b0e5c 100644
--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -1160,13 +1160,12 @@ static int twa_initialize_device_extensi
 	}
 
 	/* Allocate event info space */
-	tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL);
+	tw_dev->event_queue[0] = kcalloc(sizeof(TW_Event), TW_Q_LENGTH, GFP_KERNEL);
 	if (!tw_dev->event_queue[0]) {
 		TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
 		goto out;
 	}
 
-	memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH);
 
 	for (i = 0; i < TW_Q_LENGTH; i++) {
 		tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
diff --git a/drivers/scsi/NCR53C9x.c b/drivers/scsi/NCR53C9x.c
index 8b5334c..773d11d 100644
--- a/drivers/scsi/NCR53C9x.c
+++ b/drivers/scsi/NCR53C9x.c
@@ -3606,11 +3606,10 @@ #endif
 int esp_slave_alloc(struct scsi_device *SDptr)
 {
 	struct esp_device *esp_dev =
-		kmalloc(sizeof(struct esp_device), GFP_ATOMIC);
+		kzalloc(sizeof(struct esp_device), GFP_ATOMIC);
 
 	if (!esp_dev)
 		return -ENOMEM;
-	memset(esp_dev, 0, sizeof(struct esp_device));
 	SDptr->hostdata = esp_dev;
 	return 0;
 }
diff --git a/drivers/scsi/NCR_D700.c b/drivers/scsi/NCR_D700.c
index f12864a..3a80897 100644
--- a/drivers/scsi/NCR_D700.c
+++ b/drivers/scsi/NCR_D700.c
@@ -181,13 +181,12 @@ NCR_D700_probe_one(struct NCR_D700_priva
 	struct Scsi_Host *host;
 	int ret;
 
-	hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL);
+	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
 	if (!hostdata) {
 		printk(KERN_ERR "NCR D700: SIOP%d: Failed to allocate host"
 		       "data, detatching\n", siop);
 		return -ENOMEM;
 	}
-	memset(hostdata, 0, sizeof(*hostdata));
 
 	if (!request_region(region, 64, "NCR_D700")) {
 		printk(KERN_ERR "NCR D700: Failed to reserve IO region 0x%x\n",
diff --git a/drivers/scsi/NCR_Q720.c b/drivers/scsi/NCR_Q720.c
index 778844c..a8bbdc2 100644
--- a/drivers/scsi/NCR_Q720.c
+++ b/drivers/scsi/NCR_Q720.c
@@ -148,11 +148,10 @@ NCR_Q720_probe(struct device *dev)
 	__u32 base_addr, mem_size;
 	void __iomem *mem_base;
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return -ENOMEM;
 
-	memset(p, 0, sizeof(*p));
 	pos2 = mca_device_read_pos(mca_dev, 2);
 	/* enable device */
 	pos2 |=  NCR_Q720_POS2_BOARD_ENABLE | NCR_Q720_POS2_INTERRUPT_ENABLE;
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index 8dcfe4e..81e27ed 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -312,11 +312,9 @@ int aac_get_containers(struct aac_dev *d
 
 	if (maximum_num_containers < MAXIMUM_NUM_CONTAINERS)
 		maximum_num_containers = MAXIMUM_NUM_CONTAINERS;
-	fsa_dev_ptr =  kmalloc(sizeof(*fsa_dev_ptr) * maximum_num_containers,
-			GFP_KERNEL);
+	fsa_dev_ptr =  kcalloc(sizeof(*fsa_dev_ptr), maximum_num_containers, GFP_KERNEL);
 	if (!fsa_dev_ptr)
 		return -ENOMEM;
-	memset(fsa_dev_ptr, 0, sizeof(*fsa_dev_ptr) * maximum_num_containers);
 
 	dev->fsa_dev = fsa_dev_ptr;
 	dev->maximum_num_containers = maximum_num_containers;
diff --git a/drivers/scsi/imm.c b/drivers/scsi/imm.c
index 0464c18..005d2b0 100644
--- a/drivers/scsi/imm.c
+++ b/drivers/scsi/imm.c
@@ -1159,11 +1159,10 @@ static int __imm_attach(struct parport *
 
 	init_waitqueue_head(&waiting);
 
-	dev = kmalloc(sizeof(imm_struct), GFP_KERNEL);
+	dev = kzalloc(sizeof(imm_struct), GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
 
-	memset(dev, 0, sizeof(imm_struct));
 
 	dev->base = -1;
 	dev->mode = IMM_AUTODETECT;
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index 8b704f7..84490d7 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -7236,14 +7236,13 @@ ips_init_phase1(struct pci_dev *pci_dev,
 	subdevice_id = pci_dev->subsystem_device;
 
 	/* found a controller */
-	ha = kmalloc(sizeof (ips_ha_t), GFP_KERNEL);
+	ha = kzalloc(sizeof (ips_ha_t), GFP_KERNEL);
 	if (ha == NULL) {
 		IPS_PRINTK(KERN_WARNING, pci_dev,
 			   "Unable to allocate temporary ha struct\n");
 		return -1;
 	}
 
-	memset(ha, 0, sizeof (ips_ha_t));
 
 	ips_sh[index] = NULL;
 	ips_ha[index] = ha;
diff --git a/drivers/scsi/lasi700.c b/drivers/scsi/lasi700.c
index 5c32a69..3126824 100644
--- a/drivers/scsi/lasi700.c
+++ b/drivers/scsi/lasi700.c
@@ -101,13 +101,12 @@ lasi700_probe(struct parisc_device *dev)
 	struct NCR_700_Host_Parameters *hostdata;
 	struct Scsi_Host *host;
 
-	hostdata = kmalloc(sizeof(*hostdata), GFP_KERNEL);
+	hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
 	if (!hostdata) {
 		printk(KERN_ERR "%s: Failed to allocate host data\n",
 		       dev->dev.bus_id);
 		return -ENOMEM;
 	}
-	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
 
 	hostdata->dev = &dev->dev;
 	dma_set_mask(&dev->dev, DMA_32BIT_MASK);
diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index dcb4ba0..baa51db 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -1634,7 +1634,7 @@ lpfc_pci_probe_one(struct pci_dev *pdev,
 	/* Initialize and populate the iocb list per host.  */
 	INIT_LIST_HEAD(&phba->lpfc_iocb_list);
 	for (i = 0; i < LPFC_IOCB_LIST_CNT; i++) {
-		iocbq_entry = kmalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
+		iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
 		if (iocbq_entry == NULL) {
 			printk(KERN_ERR "%s: only allocated %d iocbs of "
 				"expected %d count. Unloading driver.\n",
@@ -1643,7 +1643,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev,
 			goto out_free_iocbq;
 		}
 
-		memset(iocbq_entry, 0, sizeof(struct lpfc_iocbq));
 		iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
 		if (iotag == 0) {
 			kfree (iocbq_entry);
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 9a12d05..f70bc2f 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -59,10 +59,9 @@ lpfc_new_scsi_buf(struct lpfc_hba * phba
 	dma_addr_t pdma_phys;
 	uint16_t iotag;
 
-	psb = kmalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
+	psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL);
 	if (!psb)
 		return NULL;
-	memset(psb, 0, sizeof (struct lpfc_scsi_buf));
 	psb->scsi_hba = phba;
 
 	/*
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index a1e7214..5fd5813 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -293,11 +293,8 @@ lpfc_sli_next_iotag(struct lpfc_hba * ph
 					   - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
 		new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
 		spin_unlock_irq(phba->host->host_lock);
-		new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
-				  GFP_KERNEL);
+		new_arr = kcalloc(new_len, sizeof(struct lpfc_iocbq*), GFP_KERNEL);
 		if (new_arr) {
-			memset((char *)new_arr, 0,
-			       new_len * sizeof (struct lpfc_iocbq *));
 			spin_lock_irq(phba->host->host_lock);
 			old_arr = psli->iocbq_lookup;
 			if (new_len <= psli->iocbq_lookup_len) {
diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
index 04d0b69..8cfa5cd 100644
--- a/drivers/scsi/megaraid/megaraid_mbox.c
+++ b/drivers/scsi/megaraid/megaraid_mbox.c
@@ -454,7 +454,7 @@ megaraid_probe_one(struct pci_dev *pdev,
 	pci_set_master(pdev);
 
 	// Allocate the per driver initialization structure
-	adapter = kmalloc(sizeof(adapter_t), GFP_KERNEL);
+	adapter = kzalloc(sizeof(adapter_t), GFP_KERNEL);
 
 	if (adapter == NULL) {
 		con_log(CL_ANN, (KERN_WARNING
@@ -462,7 +462,6 @@ megaraid_probe_one(struct pci_dev *pdev,
 
 		goto out_probe_one;
 	}
-	memset(adapter, 0, sizeof(adapter_t));
 
 
 	// set up PCI related soft state and other pre-known parameters
@@ -746,10 +745,9 @@ megaraid_init_mbox(adapter_t *adapter)
 	 * Allocate and initialize the init data structure for mailbox
 	 * controllers
 	 */
-	raid_dev = kmalloc(sizeof(mraid_device_t), GFP_KERNEL);
+	raid_dev = kzalloc(sizeof(mraid_device_t), GFP_KERNEL);
 	if (raid_dev == NULL) return -1;
 
-	memset(raid_dev, 0, sizeof(mraid_device_t));
 
 	/*
 	 * Attach the adapter soft state to raid device soft state
@@ -1050,8 +1048,7 @@ megaraid_alloc_cmd_packets(adapter_t *ad
 	 * since the calling routine does not yet know the number of available
 	 * commands.
 	 */
-	adapter->kscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_SCSI_CMDS,
-			GFP_KERNEL);
+	adapter->kscb_list = kcalloc(sizeof(scb_t), MBOX_MAX_SCSI_CMDS, GFP_KERNEL);
 
 	if (adapter->kscb_list == NULL) {
 		con_log(CL_ANN, (KERN_WARNING
@@ -1059,7 +1056,6 @@ megaraid_alloc_cmd_packets(adapter_t *ad
 			__LINE__));
 		goto out_free_ibuf;
 	}
-	memset(adapter->kscb_list, 0, sizeof(scb_t) * MBOX_MAX_SCSI_CMDS);
 
 	// memory allocation for our command packets
 	if (megaraid_mbox_setup_dma_pools(adapter) != 0) {
@@ -3572,8 +3568,7 @@ megaraid_cmm_register(adapter_t *adapter
 	int		i;
 
 	// Allocate memory for the base list of scb for management module.
-	adapter->uscb_list = kmalloc(sizeof(scb_t) * MBOX_MAX_USER_CMDS,
-			GFP_KERNEL);
+	adapter->uscb_list = kcalloc(sizeof(scb_t), MBOX_MAX_USER_CMDS, GFP_KERNEL);
 
 	if (adapter->uscb_list == NULL) {
 		con_log(CL_ANN, (KERN_WARNING
@@ -3581,7 +3576,6 @@ megaraid_cmm_register(adapter_t *adapter
 			__LINE__));
 		return -1;
 	}
-	memset(adapter->uscb_list, 0, sizeof(scb_t) * MBOX_MAX_USER_CMDS);
 
 
 	// Initialize the synchronization parameters for resources for
diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c
index 85145c4..dd190dc 100644
--- a/drivers/scsi/megaraid/megaraid_mm.c
+++ b/drivers/scsi/megaraid/megaraid_mm.c
@@ -890,12 +890,11 @@ mraid_mm_register_adp(mraid_mmadp_t *lld
 	if (lld_adp->drvr_type != DRVRTYPE_MBOX)
 		return (-EINVAL);
 
-	adapter = kmalloc(sizeof(mraid_mmadp_t), GFP_KERNEL);
+	adapter = kzalloc(sizeof(mraid_mmadp_t), GFP_KERNEL);
 
 	if (!adapter)
 		return -ENOMEM;
 
-	memset(adapter, 0, sizeof(mraid_mmadp_t));
 
 	adapter->unique_id	= lld_adp->unique_id;
 	adapter->drvr_type	= lld_adp->drvr_type;
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index e2cf12e..d2bec2b 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -1714,15 +1714,13 @@ static int megasas_alloc_cmds(struct meg
 	 * Allocate the dynamic array first and then allocate individual
 	 * commands.
 	 */
-	instance->cmd_list = kmalloc(sizeof(struct megasas_cmd *) * max_cmd,
-				     GFP_KERNEL);
+	instance->cmd_list = kcalloc(sizeof(struct megasas_cmd*), max_cmd, GFP_KERNEL);
 
 	if (!instance->cmd_list) {
 		printk(KERN_DEBUG "megasas: out of memory\n");
 		return -ENOMEM;
 	}
 
-	memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) * max_cmd);
 
 	for (i = 0; i < max_cmd; i++) {
 		instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
diff --git a/drivers/scsi/pcmcia/aha152x_stub.c b/drivers/scsi/pcmcia/aha152x_stub.c
index 370802d..2dd0dc9 100644
--- a/drivers/scsi/pcmcia/aha152x_stub.c
+++ b/drivers/scsi/pcmcia/aha152x_stub.c
@@ -106,9 +106,8 @@ static int aha152x_probe(struct pcmcia_d
     DEBUG(0, "aha152x_attach()\n");
 
     /* Create new SCSI device */
-    info = kmalloc(sizeof(*info), GFP_KERNEL);
+    info = kzalloc(sizeof(*info), GFP_KERNEL);
     if (!info) return -ENOMEM;
-    memset(info, 0, sizeof(*info));
     info->p_dev = link;
     link->priv = info;
 
diff --git a/drivers/scsi/pcmcia/nsp_cs.c b/drivers/scsi/pcmcia/nsp_cs.c
index c6f8c6e..445cfbb 100644
--- a/drivers/scsi/pcmcia/nsp_cs.c
+++ b/drivers/scsi/pcmcia/nsp_cs.c
@@ -1602,9 +1602,8 @@ static int nsp_cs_probe(struct pcmcia_de
 	nsp_dbg(NSP_DEBUG_INIT, "in");
 
 	/* Create new SCSI device */
-	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (info == NULL) { return -ENOMEM; }
-	memset(info, 0, sizeof(*info));
 	info->p_dev = link;
 	link->priv = info;
 	data->ScsiInfo = info;
diff --git a/drivers/scsi/pcmcia/qlogic_stub.c b/drivers/scsi/pcmcia/qlogic_stub.c
index 697cfb7..67c5a58 100644
--- a/drivers/scsi/pcmcia/qlogic_stub.c
+++ b/drivers/scsi/pcmcia/qlogic_stub.c
@@ -162,10 +162,9 @@ static int qlogic_probe(struct pcmcia_de
 	DEBUG(0, "qlogic_attach()\n");
 
 	/* Create new SCSI device */
-	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
-	memset(info, 0, sizeof(*info));
 	info->p_dev = link;
 	link->priv = info;
 	link->io.NumPorts1 = 16;
diff --git a/drivers/scsi/pcmcia/sym53c500_cs.c b/drivers/scsi/pcmcia/sym53c500_cs.c
index ffe75c4..38cd246 100644
--- a/drivers/scsi/pcmcia/sym53c500_cs.c
+++ b/drivers/scsi/pcmcia/sym53c500_cs.c
@@ -879,10 +879,9 @@ SYM53C500_probe(struct pcmcia_device *li
 	DEBUG(0, "SYM53C500_attach()\n");
 
 	/* Create new SCSI device */
-	info = kmalloc(sizeof(*info), GFP_KERNEL);
+	info = kzalloc(sizeof(*info), GFP_KERNEL);
 	if (!info)
 		return -ENOMEM;
-	memset(info, 0, sizeof(*info));
 	info->p_dev = link;
 	link->priv = info;
 	link->io.NumPorts1 = 16;
diff --git a/drivers/scsi/ppa.c b/drivers/scsi/ppa.c
index 584ba4d..ff0b3ff 100644
--- a/drivers/scsi/ppa.c
+++ b/drivers/scsi/ppa.c
@@ -1017,10 +1017,9 @@ static int __ppa_attach(struct parport *
 	int modes, ppb, ppb_hi;
 	int err = -ENOMEM;
 
-	dev = kmalloc(sizeof(ppa_struct), GFP_KERNEL);
+	dev = kzalloc(sizeof(ppa_struct), GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
-	memset(dev, 0, sizeof(ppa_struct));
 	dev->base = -1;
 	dev->mode = PPA_AUTODETECT;
 	dev->recon_tmo = PPA_RECON_TMO;
diff --git a/drivers/scsi/sim710.c b/drivers/scsi/sim710.c
index 018c65f..710f19d 100644
--- a/drivers/scsi/sim710.c
+++ b/drivers/scsi/sim710.c
@@ -100,7 +100,7 @@ sim710_probe_common(struct device *dev, 
 {
 	struct Scsi_Host * host = NULL;
 	struct NCR_700_Host_Parameters *hostdata =
-		kmalloc(sizeof(struct NCR_700_Host_Parameters),	GFP_KERNEL);
+		kzalloc(sizeof(struct NCR_700_Host_Parameters),	GFP_KERNEL);
 
 	printk(KERN_NOTICE "sim710: %s\n", dev->bus_id);
 	printk(KERN_NOTICE "sim710: irq = %d, clock = %d, base = 0x%lx, scsi_id = %d\n",
@@ -110,7 +110,6 @@ sim710_probe_common(struct device *dev, 
 		printk(KERN_ERR "sim710: Failed to allocate host data\n");
 		goto out;
 	}
-	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
 
 	if(request_region(base_addr, 64, "sim710") == NULL) {
 		printk(KERN_ERR "sim710: Failed to reserve IO region 0x%lx\n",
diff --git a/drivers/scsi/tmscsim.c b/drivers/scsi/tmscsim.c
index e7b85e8..154da1e 100644
--- a/drivers/scsi/tmscsim.c
+++ b/drivers/scsi/tmscsim.c
@@ -2101,10 +2101,9 @@ static int dc390_slave_alloc(struct scsi
 	uint id = scsi_device->id;
 	uint lun = scsi_device->lun;
 
-	pDCB = kmalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
+	pDCB = kzalloc(sizeof(struct dc390_dcb), GFP_KERNEL);
 	if (!pDCB)
 		return -ENOMEM;
-	memset(pDCB, 0, sizeof(struct dc390_dcb));
 
 	if (!pACB->DCBCnt++) {
 		pACB->pLinkDCB = pDCB;
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 954073c..72229df 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -716,7 +716,7 @@ static int pl011_probe(struct amba_devic
 		goto out;
 	}
 
-	uap = kmalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
+	uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
 	if (uap == NULL) {
 		ret = -ENOMEM;
 		goto out;
@@ -728,7 +728,6 @@ static int pl011_probe(struct amba_devic
 		goto free;
 	}
 
-	memset(uap, 0, sizeof(struct uart_amba_port));
 	uap->clk = clk_get(&dev->dev, "UARTCLK");
 	if (IS_ERR(uap->clk)) {
 		ret = PTR_ERR(uap->clk);
diff --git a/drivers/sh/superhyway/superhyway.c b/drivers/sh/superhyway/superhyway.c
index 94b2290..7d873b3 100644
--- a/drivers/sh/superhyway/superhyway.c
+++ b/drivers/sh/superhyway/superhyway.c
@@ -56,11 +56,10 @@ int superhyway_add_device(unsigned long 
 	struct superhyway_device *dev = sdev;
 
 	if (!dev) {
-		dev = kmalloc(sizeof(struct superhyway_device), GFP_KERNEL);
+		dev = kzalloc(sizeof(struct superhyway_device), GFP_KERNEL);
 		if (!dev)
 			return -ENOMEM;
 
-		memset(dev, 0, sizeof(struct superhyway_device));
 	}
 
 	dev->bus = bus;
diff --git a/drivers/sn/ioc3.c b/drivers/sn/ioc3.c
index 2dd6eed..29fcd6d 100644
--- a/drivers/sn/ioc3.c
+++ b/drivers/sn/ioc3.c
@@ -629,7 +629,7 @@ #ifdef USE_64BIT_DMA
 #endif
 
 	/* Set up per-IOC3 data */
-	idd = kmalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
+	idd = kzalloc(sizeof(struct ioc3_driver_data), GFP_KERNEL);
 	if (!idd) {
 		printk(KERN_WARNING
 		       "%s: Failed to allocate IOC3 data for pci_dev %s.\n",
@@ -637,7 +637,6 @@ #endif
 		ret = -ENODEV;
 		goto out_idd;
 	}
-	memset(idd, 0, sizeof(struct ioc3_driver_data));
 	spin_lock_init(&idd->ir_lock);
 	spin_lock_init(&idd->gpio_lock);
 	idd->pdev = pdev;
diff --git a/drivers/telephony/ixj_pcmcia.c b/drivers/telephony/ixj_pcmcia.c
index 3e658dc..ff9a29b 100644
--- a/drivers/telephony/ixj_pcmcia.c
+++ b/drivers/telephony/ixj_pcmcia.c
@@ -45,11 +45,10 @@ static int ixj_probe(struct pcmcia_devic
 	p_dev->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
 	p_dev->io.IOAddrLines = 3;
 	p_dev->conf.IntType = INT_MEMORY_AND_IO;
-	p_dev->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
+	p_dev->priv = kzalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
 	if (!p_dev->priv) {
 		return -ENOMEM;
 	}
-	memset(p_dev->priv, 0, sizeof(struct ixj_info_t));
 
 	return ixj_config(p_dev);
 }
diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c
index ae931af..79de3d3 100644
--- a/drivers/usb/gadget/goku_udc.c
+++ b/drivers/usb/gadget/goku_udc.c
@@ -1827,14 +1827,13 @@ static int goku_probe(struct pci_dev *pd
 	}
 
 	/* alloc, and start init */
-	dev = kmalloc (sizeof *dev, GFP_KERNEL);
+	dev = kzalloc (sizeof *dev, GFP_KERNEL);
 	if (dev == NULL){
 		pr_debug("enomem %s\n", pci_name(pdev));
 		retval = -ENOMEM;
 		goto done;
 	}
 
-	memset(dev, 0, sizeof *dev);
 	spin_lock_init(&dev->lock);
 	dev->pdev = pdev;
 	dev->gadget.ops = &goku_ops;
diff --git a/drivers/usb/gadget/serial.c b/drivers/usb/gadget/serial.c
index f847c34..df1df44 100644
--- a/drivers/usb/gadget/serial.c
+++ b/drivers/usb/gadget/serial.c
@@ -1427,7 +1427,7 @@ #endif /* CONFIG_USB_GADGET_DUALSPEED */
 		gs_acm_config_desc.bmAttributes |= USB_CONFIG_ATT_WAKEUP;
 	}
 
-	gs_device = dev = kmalloc(sizeof(struct gs_dev), GFP_KERNEL);
+	gs_device = dev = kzalloc(sizeof(struct gs_dev), GFP_KERNEL);
 	if (dev == NULL)
 		return -ENOMEM;
 
@@ -1435,7 +1435,6 @@ #endif /* CONFIG_USB_GADGET_DUALSPEED */
 		init_utsname()->sysname, init_utsname()->release,
 		gadget->name);
 
-	memset(dev, 0, sizeof(struct gs_dev));
 	dev->dev_gadget = gadget;
 	spin_lock_init(&dev->dev_lock);
 	INIT_LIST_HEAD(&dev->dev_req_list);
diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c
index a66637e..8dcc782 100644
--- a/drivers/usb/host/ohci-hcd.c
+++ b/drivers/usb/host/ohci-hcd.c
@@ -171,11 +171,10 @@ #endif
 	}
 
 	/* allocate the private part of the URB */
-	urb_priv = kmalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
+	urb_priv = kzalloc (sizeof (urb_priv_t) + size * sizeof (struct td *),
 			mem_flags);
 	if (!urb_priv)
 		return -ENOMEM;
-	memset (urb_priv, 0, sizeof (urb_priv_t) + size * sizeof (struct td *));
 	INIT_LIST_HEAD (&urb_priv->pending);
 	urb_priv->length = size;
 	urb_priv->ed = ed;
diff --git a/drivers/usb/host/sl811_cs.c b/drivers/usb/host/sl811_cs.c
index 2d0e73b..5da63f5 100644
--- a/drivers/usb/host/sl811_cs.c
+++ b/drivers/usb/host/sl811_cs.c
@@ -278,10 +278,9 @@ static int sl811_cs_probe(struct pcmcia_
 {
 	local_info_t *local;
 
-	local = kmalloc(sizeof(local_info_t), GFP_KERNEL);
+	local = kzalloc(sizeof(local_info_t), GFP_KERNEL);
 	if (!local)
 		return -ENOMEM;
-	memset(local, 0, sizeof(local_info_t));
 	local->p_dev = link;
 	link->priv = local;
 
diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index e0f122e..0ba04eb 100644
--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -2774,12 +2774,11 @@ static int ftdi_elan_probe(struct usb_in
         size_t buffer_size;
         int i;
         int retval = -ENOMEM;
-        struct usb_ftdi *ftdi = kmalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
+        struct usb_ftdi *ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
         if (ftdi == NULL) {
                 printk(KERN_ERR "Out of memory\n");
                 return -ENOMEM;
         }
-        memset(ftdi, 0x00, sizeof(struct usb_ftdi));
         down(&ftdi_module_lock);
         list_add_tail(&ftdi->ftdi_list, &ftdi_static_list);
         ftdi->sequence_num = ++ftdi_instances;
diff --git a/drivers/video/amba-clcd.c b/drivers/video/amba-clcd.c
index 6c9dc2e..a7a1c89 100644
--- a/drivers/video/amba-clcd.c
+++ b/drivers/video/amba-clcd.c
@@ -447,13 +447,12 @@ static int clcdfb_probe(struct amba_devi
 		goto out;
 	}
 
-	fb = kmalloc(sizeof(struct clcd_fb), GFP_KERNEL);
+	fb = kzalloc(sizeof(struct clcd_fb), GFP_KERNEL);
 	if (!fb) {
 		printk(KERN_INFO "CLCD: could not allocate new clcd_fb struct\n");
 		ret = -ENOMEM;
 		goto free_region;
 	}
-	memset(fb, 0, sizeof(struct clcd_fb));
 
 	fb->dev = dev;
 	fb->board = board;
diff --git a/drivers/video/aty/atyfb_base.c b/drivers/video/aty/atyfb_base.c
index 2fbff63..343235c 100644
--- a/drivers/video/aty/atyfb_base.c
+++ b/drivers/video/aty/atyfb_base.c
@@ -2937,12 +2937,11 @@ static int __devinit atyfb_setup_sparc(s
 		/* nothing */ ;
 	j = i + 4;
 
-	par->mmap_map = kmalloc(j * sizeof(*par->mmap_map), GFP_ATOMIC);
+	par->mmap_map = kcalloc(j, sizeof(*par->mmap_map), GFP_ATOMIC);
 	if (!par->mmap_map) {
 		PRINTKE("atyfb_setup_sparc() can't alloc mmap_map\n");
 		return -ENOMEM;
 	}
-	memset(par->mmap_map, 0, j * sizeof(*par->mmap_map));
 
 	for (i = 0, j = 2; i < 6 && pdev->resource[i].start; i++) {
 		struct resource *rp = &pdev->resource[i];
diff --git a/drivers/video/au1200fb.c b/drivers/video/au1200fb.c
index dbf4ec3..311e323 100644
--- a/drivers/video/au1200fb.c
+++ b/drivers/video/au1200fb.c
@@ -1589,11 +1589,10 @@ static int au1200fb_init_fbinfo(struct a
 		return -EFAULT;
 	}
 
-	fbi->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
+	fbi->pseudo_palette = kcalloc(sizeof(u32), 16, GFP_KERNEL);
 	if (!fbi->pseudo_palette) {
 		return -ENOMEM;
 	}
-	memset(fbi->pseudo_palette, 0, sizeof(u32) * 16);
 
 	if (fb_alloc_cmap(&fbi->cmap, AU1200_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
 		print_err("Fail to allocate colormap (%d entries)",
diff --git a/drivers/video/clps711xfb.c b/drivers/video/clps711xfb.c
index 50b78af..dea6579 100644
--- a/drivers/video/clps711xfb.c
+++ b/drivers/video/clps711xfb.c
@@ -366,11 +366,10 @@ int __init clps711xfb_init(void)
 	if (fb_get_options("clps711xfb", NULL))
 		return -ENODEV;
 
-	cfb = kmalloc(sizeof(*cfb), GFP_KERNEL);
+	cfb = kzalloc(sizeof(*cfb), GFP_KERNEL);
 	if (!cfb)
 		goto out;
 
-	memset(cfb, 0, sizeof(*cfb));
 	strcpy(cfb->fix.id, "clps711x");
 
 	cfb->fbops		= &clps7111fb_ops;
diff --git a/drivers/video/cyber2000fb.c b/drivers/video/cyber2000fb.c
index 7a6eeda..30ede6e 100644
--- a/drivers/video/cyber2000fb.c
+++ b/drivers/video/cyber2000fb.c
@@ -1221,11 +1221,10 @@ cyberpro_alloc_fb_info(unsigned int id, 
 {
 	struct cfb_info *cfb;
 
-	cfb = kmalloc(sizeof(struct cfb_info), GFP_KERNEL);
+	cfb = kzalloc(sizeof(struct cfb_info), GFP_KERNEL);
 	if (!cfb)
 		return NULL;
 
-	memset(cfb, 0, sizeof(struct cfb_info));
 
 	cfb->id			= id;
 
diff --git a/drivers/video/offb.c b/drivers/video/offb.c
index 885b428..7219feb 100644
--- a/drivers/video/offb.c
+++ b/drivers/video/offb.c
@@ -273,13 +273,12 @@ static void __init offb_init_fb(const ch
 
 	size = sizeof(struct fb_info) + sizeof(u32) * 17;
 
-	info = kmalloc(size, GFP_ATOMIC);
+	info = kzalloc(size, GFP_ATOMIC);
 	
 	if (info == 0) {
 		release_mem_region(res_start, res_size);
 		return;
 	}
-	memset(info, 0, size);
 
 	fix = &info->fix;
 	var = &info->var;
diff --git a/drivers/video/pvr2fb.c b/drivers/video/pvr2fb.c
index df2909a..308b9fa 100644
--- a/drivers/video/pvr2fb.c
+++ b/drivers/video/pvr2fb.c
@@ -1085,13 +1085,12 @@ #ifndef MODULE
 #endif
 	size = sizeof(struct fb_info) + sizeof(struct pvr2fb_par) + 16 * sizeof(u32);
 
-	fb_info = kmalloc(size, GFP_KERNEL);
+	fb_info = kzalloc(size, GFP_KERNEL);
 	if (!fb_info) {
 		printk(KERN_ERR "Failed to allocate memory for fb_info\n");
 		return -ENOMEM;
 	}
 
-	memset(fb_info, 0, size);
 
 	currentpar = (struct pvr2fb_par *)(fb_info + 1);
 
diff --git a/drivers/video/savage/savagefb_driver.c b/drivers/video/savage/savagefb_driver.c
index 3d7507a..b855f4a 100644
--- a/drivers/video/savage/savagefb_driver.c
+++ b/drivers/video/savage/savagefb_driver.c
@@ -2174,11 +2174,10 @@ static int __devinit savage_init_fb_info
 
 #if defined(CONFIG_FB_SAVAGE_ACCEL)
 	/* FIFO size + padding for commands */
-	info->pixmap.addr = kmalloc(8*1024, GFP_KERNEL);
+	info->pixmap.addr = kcalloc(8, 1024, GFP_KERNEL);
 
 	err = -ENOMEM;
 	if (info->pixmap.addr) {
-		memset(info->pixmap.addr, 0, 8*1024);
 		info->pixmap.size = 8*1024;
 		info->pixmap.scan_align = 4;
 		info->pixmap.buf_align = 4;
diff --git a/drivers/video/valkyriefb.c b/drivers/video/valkyriefb.c
index ad66f07..7b0cef9 100644
--- a/drivers/video/valkyriefb.c
+++ b/drivers/video/valkyriefb.c
@@ -356,10 +356,9 @@ #else /* ppc (!CONFIG_MAC) */
 	}
 #endif /* ppc (!CONFIG_MAC) */
 
-	p = kmalloc(sizeof(*p), GFP_ATOMIC);
+	p = kzalloc(sizeof(*p), GFP_ATOMIC);
 	if (p == 0)
 		return -ENOMEM;
-	memset(p, 0, sizeof(*p));
 
 	/* Map in frame buffer and registers */
 	if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb")) {
diff --git a/drivers/w1/masters/matrox_w1.c b/drivers/w1/masters/matrox_w1.c
index 6f9d880..d356da5 100644
--- a/drivers/w1/masters/matrox_w1.c
+++ b/drivers/w1/masters/matrox_w1.c
@@ -164,7 +164,7 @@ static int __devinit matrox_w1_probe(str
 	if (pdev->vendor != PCI_VENDOR_ID_MATROX || pdev->device != PCI_DEVICE_ID_MATROX_G400)
 		return -ENODEV;
 
-	dev = kmalloc(sizeof(struct matrox_device) +
+	dev = kzalloc(sizeof(struct matrox_device) +
 		       sizeof(struct w1_bus_master), GFP_KERNEL);
 	if (!dev) {
 		dev_err(&pdev->dev,
@@ -173,7 +173,6 @@ static int __devinit matrox_w1_probe(str
 		return -ENOMEM;
 	}
 
-	memset(dev, 0, sizeof(struct matrox_device) + sizeof(struct w1_bus_master));
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c
index 8ea17a5..6bc037f 100644
--- a/drivers/w1/slaves/w1_ds2433.c
+++ b/drivers/w1/slaves/w1_ds2433.c
@@ -265,10 +265,9 @@ static int w1_f23_add_slave(struct w1_sl
 #ifdef CONFIG_W1_SLAVE_DS2433_CRC
 	struct w1_f23_data *data;
 
-	data = kmalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
+	data = kzalloc(sizeof(struct w1_f23_data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
-	memset(data, 0, sizeof(struct w1_f23_data));
 	sl->family_data = data;
 
 #endif	/* CONFIG_W1_SLAVE_DS2433_CRC */
diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c
index 7d6876d..ade5ab1 100644
--- a/drivers/w1/w1.c
+++ b/drivers/w1/w1.c
@@ -516,7 +516,7 @@ static int w1_attach_slave_device(struct
 	int err;
 	struct w1_netlink_msg msg;
 
-	sl = kmalloc(sizeof(struct w1_slave), GFP_KERNEL);
+	sl = kzalloc(sizeof(struct w1_slave), GFP_KERNEL);
 	if (!sl) {
 		dev_err(&dev->dev,
 			 "%s: failed to allocate new slave device.\n",
@@ -524,7 +524,6 @@ static int w1_attach_slave_device(struct
 		return -ENOMEM;
 	}
 
-	memset(sl, 0, sizeof(*sl));
 
 	sl->owner = THIS_MODULE;
 	sl->master = dev;
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c
index 258defd..2fbd8dd 100644
--- a/drivers/w1/w1_int.c
+++ b/drivers/w1/w1_int.c
@@ -41,7 +41,7 @@ static struct w1_master * w1_alloc_dev(u
 	/*
 	 * We are in process context(kernel thread), so can sleep.
 	 */
-	dev = kmalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);
+	dev = kzalloc(sizeof(struct w1_master) + sizeof(struct w1_bus_master), GFP_KERNEL);
 	if (!dev) {
 		printk(KERN_ERR
 			"Failed to allocate %zd bytes for new w1 device.\n",
@@ -49,7 +49,6 @@ static struct w1_master * w1_alloc_dev(u
 		return NULL;
 	}
 
-	memset(dev, 0, sizeof(struct w1_master) + sizeof(struct w1_bus_master));
 
 	dev->bus_master = (struct w1_bus_master *)(dev + 1);
 
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index f858fef..fb9e2ee 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -39,9 +39,7 @@ char *allocate_lvb(struct dlm_ls *ls)
 {
 	char *p;
 
-	p = kmalloc(ls->ls_lvblen, GFP_KERNEL);
-	if (p)
-		memset(p, 0, ls->ls_lvblen);
+	p = kzalloc(ls->ls_lvblen, GFP_KERNEL);
 	return p;
 }
 
@@ -59,9 +57,7 @@ struct dlm_rsb *allocate_rsb(struct dlm_
 
 	DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,);
 
-	r = kmalloc(sizeof(*r) + namelen, GFP_KERNEL);
-	if (r)
-		memset(r, 0, sizeof(*r) + namelen);
+	r = kzalloc(sizeof(*r) + namelen, GFP_KERNEL);
 	return r;
 }
 
@@ -101,9 +97,7 @@ struct dlm_direntry *allocate_direntry(s
 	DLM_ASSERT(namelen <= DLM_RESNAME_MAXLEN,
 		   printk("namelen = %d\n", namelen););
 
-	de = kmalloc(sizeof(*de) + namelen, GFP_KERNEL);
-	if (de)
-		memset(de, 0, sizeof(*de) + namelen);
+	de = kzalloc(sizeof(*de) + namelen, GFP_KERNEL);
 	return de;
 }
 
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 5de5061..c628c92 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -882,13 +882,11 @@ #endif
 		goto failed_mount;
 	}
 	bgl_lock_init(&sbi->s_blockgroup_lock);
-	sbi->s_debts = kmalloc(sbi->s_groups_count * sizeof(*sbi->s_debts),
-			       GFP_KERNEL);
+	sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
 	if (!sbi->s_debts) {
 		printk ("EXT2-fs: not enough memory\n");
 		goto failed_mount_group_desc;
 	}
-	memset(sbi->s_debts, 0, sbi->s_groups_count * sizeof(*sbi->s_debts));
 	for (i = 0; i < db_count; i++) {
 		block = descriptor_loc(sb, logic_sb_block, i);
 		sbi->s_group_desc[i] = sb_bread(sb, block);
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 9a3a058..585a26a 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -372,11 +372,10 @@ void add_partition(struct gendisk *disk,
 {
 	struct hd_struct *p;
 
-	p = kmalloc(sizeof(*p), GFP_KERNEL);
+	p = kzalloc(sizeof(*p), GFP_KERNEL);
 	if (!p)
 		return;
 	
-	memset(p, 0, sizeof(*p));
 	p->start_sect = start;
 	p->nr_sects = len;
 	p->partno = part;
diff --git a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
index 89f933e..344cb9c 100644
--- a/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
+++ b/net/ipv4/netfilter/nf_conntrack_l3proto_ipv4_compat.c
@@ -182,7 +182,7 @@ static int ct_open(struct inode *inode, 
 	struct ct_iter_state *st;
 	int ret;
 
-	st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
+	st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
 	if (st == NULL)
 		return -ENOMEM;
 	ret = seq_open(file, &ct_seq_ops);
@@ -190,7 +190,6 @@ static int ct_open(struct inode *inode, 
 		goto out_free;
 	seq          = file->private_data;
 	seq->private = st;
-	memset(st, 0, sizeof(struct ct_iter_state));
 	return ret;
 out_free:
 	kfree(st);
diff --git a/net/mac80211/ieee80211_rate.c b/net/mac80211/ieee80211_rate.c
index 16e8508..2118de0 100644
--- a/net/mac80211/ieee80211_rate.c
+++ b/net/mac80211/ieee80211_rate.c
@@ -24,11 +24,10 @@ int ieee80211_rate_control_register(stru
 {
 	struct rate_control_alg *alg;
 
-	alg = kmalloc(sizeof(*alg), GFP_KERNEL);
+	alg = kzalloc(sizeof(*alg), GFP_KERNEL);
 	if (alg == NULL) {
 		return -ENOMEM;
 	}
-	memset(alg, 0, sizeof(*alg));
 	alg->ops = ops;
 
 	mutex_lock(&rate_ctrl_mutex);
diff --git a/net/mac80211/ieee80211_sta.c b/net/mac80211/ieee80211_sta.c
index 91b545c..40e8b59 100644
--- a/net/mac80211/ieee80211_sta.c
+++ b/net/mac80211/ieee80211_sta.c
@@ -1282,10 +1282,9 @@ ieee80211_rx_bss_add(struct net_device *
 	struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 	struct ieee80211_sta_bss *bss;
 
-	bss = kmalloc(sizeof(*bss), GFP_ATOMIC);
+	bss = kzalloc(sizeof(*bss), GFP_ATOMIC);
 	if (!bss)
 		return NULL;
-	memset(bss, 0, sizeof(*bss));
 	atomic_inc(&bss->users);
 	atomic_inc(&bss->users);
 	memcpy(bss->bssid, bssid, ETH_ALEN);
diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
index 45baeb0..9058a2a 100644
--- a/net/netfilter/nf_conntrack_standalone.c
+++ b/net/netfilter/nf_conntrack_standalone.c
@@ -203,7 +203,7 @@ static int ct_open(struct inode *inode, 
 	struct ct_iter_state *st;
 	int ret;
 
-	st = kmalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
+	st = kzalloc(sizeof(struct ct_iter_state), GFP_KERNEL);
 	if (st == NULL)
 		return -ENOMEM;
 	ret = seq_open(file, &ct_seq_ops);
@@ -211,7 +211,6 @@ static int ct_open(struct inode *inode, 
 		goto out_free;
 	seq          = file->private_data;
 	seq->private = st;
-	memset(st, 0, sizeof(struct ct_iter_state));
 	return ret;
 out_free:
 	kfree(st);
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index 9dfc912..d8473ee 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -1052,12 +1052,11 @@ int tipc_nametbl_init(void)
 {
 	int array_size = sizeof(struct hlist_head) * tipc_nametbl_size;
 
-	table.types = kmalloc(array_size, GFP_ATOMIC);
+	table.types = kzalloc(array_size, GFP_ATOMIC);
 	if (!table.types)
 		return -ENOMEM;
 
 	write_lock_bh(&tipc_nametbl_lock);
-	memset(table.types, 0, array_size);
 	table.local_publ_count = 0;
 	write_unlock_bh(&tipc_nametbl_lock);
 	return 0;
diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
index 061a7c6..e11790f 100644
--- a/sound/core/seq/seq_virmidi.c
+++ b/sound/core/seq/seq_virmidi.c
@@ -363,7 +363,7 @@ static int snd_virmidi_dev_attach_seq(st
 	if (rdev->client >= 0)
 		return 0;
 
-	pinfo = kmalloc(sizeof(*pinfo), GFP_KERNEL);
+	pinfo = kzalloc(sizeof(*pinfo), GFP_KERNEL);
 	if (!pinfo) {
 		err = -ENOMEM;
 		goto __error;
@@ -380,7 +380,6 @@ static int snd_virmidi_dev_attach_seq(st
 	rdev->client = client;
 
 	/* create a port */
-	memset(pinfo, 0, sizeof(*pinfo));
 	pinfo->addr.client = client;
 	sprintf(pinfo->name, "VirMIDI %d-%d", rdev->card->number, rdev->device);
 	/* set all capabilities */

-
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